Oracle Database uses Net Directory Naming with Microsoft Active Directory

 The demonstration is tested on following environment,

Windows Domain controller: DC01.lab.dbaplus.ca - Windows 2022
Workstation 1:  wkstn01 – Windows 11 + Oracle Client 19.3+ RU 19.22
Workstation 2:  wkstn02 – Oracle Linux 9.3 + Oracle Client 19.3

Listener failed to start after Oracle Database out-of-place patching

 After applying patches on Oracle Database home with out-of-place patching. The listener cannot be started with error,

TNS-01201: Listener cannot find executable <ORACLE_HOME>/bin/oracle for SID <ORACLE_SID>

PowerShell script to remotely start / stop MS SQL server on multiple machines

 This PowerShell script picks up server machines from given text file which includes all SQL server host names.

In order to run the script successfully, it needs following requirements,

1. User who runs the script has to be a domain user account who has start/stop SQL server privileges on all SQL servers listed by the text file. 

2. All SQL servers are member of same domain, and each server is listed as one line in a text file.

3. The script file accepts two parameters. First one is operation directive, it should be start, stop or status. Second parameter is full path of SQL server list file, the script will read all servers from the list file.

Install Oracle Database 19c Client on Oracle Linux 9 Subsystem on Windows 11

Beginning with 19.22 Jan2024 RU, the 19c database is certified on Oracle Linux 9.x and Red Hat Enterprise Linux (RHEL) 9.x. The minimum kernel version has to be 5.15.0 with Oracle Linux 9 and 5.14.0 with RHEL.

Therefore, I want to try 19c client on my favorite  Windows Subsystem for Linux which is running Oracle Linux 9. The installation includes following steps,

 1) Update WSL kernel version

 

    It is strongly recommended to update the kernel version to 5.15 or higher which is minimum version for Oracle Database 19c on Oracle Linux 9.

 2) Install Oracle Linux 9.1 Subsystem

    You also have other choices (e.g. Oracle Linux 9.2, Oracle Linux 9.3) if you are installing from Microsoft Store instead of command line.

 3) Configure Oracle Linux 9 for Oracle Database installation

 4) Install Oracle Database 19c (19.22) Client

OEM 13c Log4j Vulnerabilities Security Alert for SQL Developer shipped with Oracle Enterprise Manager (OEM) Cloud Control

The SQL Developer shipped with OEM 13c (13.4.1.0.0 and later) includes Apache Log4j 1.x and 2.x, which is scanned out with following vulnerabilities

  Log4j 2.x :CVE-2021-45046, CVE-2021-44228, CVE-2021-44832, CVE-2021-45105

  Log4j 1.x :CVE-2021-4104, CVE-2022-23302 and CVE-2022-23305

These log4j*.jar are located under SQL Developer directory $OMS_HOME/sqldeveloper.

Since SQL Developer is no longer required by the OEM, it is safe to delete whole SQL Developer directory to comply with the listed vulnerabilites.

$ cd $OMS_HOME
$ rm -rf sqldeveloper

Script - Check LOBSEGMENT Storage Usage of Oracle table BLOB column stored as SECUREFILE or BASICFILE

NAME

  CkSpaceBLOB.sql

DESCRIPTION

  Check the space usage of BLOB column which is stored as LOBSEGMENT type segment  

USAGE

     CkSapceBLOB <table_owner> <table_name> <lob_column_name>

Oracle Database 12.2/18c/19c ORA-00600: [qosdExpStatRead: expcnt mismatch]

Oracle database 12.2, 18c or 19c database alert log file reports ORA-00600: [qosdExpStatRead: expcnt mismatch]. The error message is something like following

2023-01-29T15:55:03.286965-05:00
Errors in file /u01/app/oracle/diag/rdbms/cdb01/cdb01/trace/cdb01_mz00_513756.trc  (incident=97764) (PDBNAME=PDB1):
ORA-00600: internal error code, arguments: [qosdExpStatRead: expcnt mismatch], [65561], [25], [3125688], [1], [], [], [], [], [], [], []
PDB1(3):Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
2023-01-29T15:55:03.291141-05:00
Errors in file /u01/app/oracle/diag/rdbms/cdb01/cdb01/trace/cdb01_mz00_513756.trc:
ORA-00600: internal error code, arguments: [qosdExpStatRead: expcnt mismatch], [65561], [25], [3125688], [1], [], [], [], [], [], [], []

19c database createtion getting ORA-46385 On AUDSYS.AUD$UNIFIED

When creating Oracle 19c databases, got errors as following,

comment on table AUDSYS.AUD$UNIFIED is
                        *
ERROR at line 1:

ORA-46385: DML and DDL operations are not allowed on table

"AUDSYS"."AUD$UNIFIED".

It was reported by Oracle support on 19.5. It is still there when creating non-cdb on 19.16. 

When the Unified Auditing is enabled on Oracle database home, the database creation tries to create a comment on internal Unified Auditing table and gets this error.

It is completely harmless and can be safely ignored.

Upgrade/patch JDK 8 used by Oracle Enterprise Manager 13.5 OMS and Agent

This document is for upgrading JDK used by Enterprise Manager (EM) 13.5 in both OMS and Agent home on Linux, Solaris and Windows. 

How to Apply Patch on Oracle Enterprise Manger 13c (13.4/13.5) Agent in online / offline mode

Oracle Enterprise Manager (EM) 13.4/13.5 agent patch is released as one-off patch, Release Update, or bundle patches. These patches can be applied manually or through EM Cloud Control console.

Patch Oracle WebLogic Server 12c Release 2 12.2.1.x (12.2.1.3, 12.2.1.4) including WLS, OHS, Coherence, ADR and RDA

This instruction applies to Oracle WebLogic Server (WLS) 12.2.1.x standalone (Lite, Slim, Generic), Oracle Fusion Middleware (FMW) 12.2.1.x Infrastructure and WLS 12.2.1.x installed with Oracle Enterprise Manager (OEM) 13c.

The installation of these WLS releases includes following components,

  OPatch

  WebLogic Server

  Coherence Server

  Oracle HTTP Server (OHS)

  Automatic Diagnostic Repository (ADR) 

Oracle Data Pump Export/Import SODA Collection Data

Simple Oracle Document Access (SODA ) collections can be exported and imported using Oracle Data Pump Utilities starting with version 19.6.

In Oracle database, a SODA collection is analogous to database table. A SODA collection is mapped to /backed by a table. A SODA document is analogous to, and is in fact backed by, a row of a database table. The row has one column for each document component: key, content, version, and so on.

ORA-02291: integrity constraint (WWV_FLOW_FND_GU_INT_G_FK) violated - parent key not found - When Importing Workspace In APEX configured with ORDS & WebLogic

When creating users during importing workspace in APEX, got ORA-02291 error like following

ORA-02291: integrity constraint (APEX_200100.WWV_FLOW_FND_GU_INT_G_FK) violated - parent key not found
ORA-06512: at "APEX_200100.WWV_FLOW_FND_USER_INT", line 2067
ORA-06512: at "APEX_200100.WWV_FLOW_FND_USER_API", line 339
ORA-06512: at line 2
02291. 00000 - "integrity constraint (%s.%s) violated - parent key not found"
*Cause:    A foreign key value has no matching primary key value.
*Action:   Delete the foreign key or add a matching primary key.

This error occurs because pre-created user groups (SQL Developer, etc) do not have the same IDs in two APEX instances. It was reported as bug of APEX 4.2.1 when ORDS is used and deployed with WebLogic. But it also reported on APEX 18.1 and I got it on my APEX  20.1.

EM 12c/13c Configure Enterprise Manager with custom or third-party SSL Certificates

When deciding to configure Oracle Enterprise Manager with custom or third-party SSL certificates,  you usually need to complete configuration tasks with following EM components

  *  EM Cloud Control Console

  *  Oracle Management Service (OMS) and EM Agent

  *  WebLogic Server (WLS)

The configuration can be done in following steps.

Script - Enable Customized Password Complexity in Oracle non-cdb or cdb environment

The script creates a password complexity verification function, and enable the function with database profile. It also sets password policy with profile.

Export/import APEX workspace and application with SQLcl

One of the reason why I prefer SQLcl to SQL*Plus is that SQLcl has built-in "apex" commands. APEX workspace and application can be easily export / import with SQLcl.

Database failed to start with errors ORA-01565 ORA-17503 ORA-27300 ORA-27301 ORA-27302

 When starting database, get errors ORA-01565 ORA-17503 ORA-27300 ORA-27301 ORA-27302. For example,

$ srvctl start database -db db01
PRCR-1079 : Failed to start resource ora.db01.db
CRS-5017: The resource action "ora.db01.db start" encountered the following error:
ORA-01078: failure in processing system parameters
ORA-01565: error in identifying file '+DATA/db01/parameterfile/spfiledb01.ora'
ORA-17503: ksfdopn:10 Failed to open file +DATA/db01/parameterfile/spfiledb01.ora
ORA-27300: OS system dependent operation:open failed with status: 13
ORA-27301: OS failure message: Permission denied
ORA-27302: failure occurred at: sskgmsmr_7
. For details refer to "(:CLSN00107:)" in "/u01/app/grid/diag/crs/host01/crs/trace/ohasd_oraagent_grid.trc".

CRS-2674: Start of 'ora.db01.db' on 'host01' failed

Oracle SQLcl installation and configuration

Oracle SQL Developer Command Line (SQLcl) is a free command-line interface for Oracle Database that combines the power of SQL*Plus and SQL Developer. It allows you to interactively or batch execute SQL and PL/SQL. SQLcl provides in-line editing, statement completion, and command recall for a feature-rich experience, as well as supporting your previously written SQL*Plus scripts.

Script Find the Regular Source File of the Multi-level Symbolic Link on Linux / Unix

 A bash script is used to find out the final regular source file or directory of a multi-level symbolic on Linux and Unix (AIX, Solaris) platform.

Oracle RAC 19c pdb open failed with ORA-12963: A read-only instance cannot be the first instance to open a database

When opening pluggable database (pdb) on one node of two-node 19c RAC, got following errors

sys@rac01> alter pluggable database pdb1 open;
alter pluggable database pdb1 open
*
ERROR at line 1:
ORA-12963: A read-only instance cannot be the first instance to open a database.

Oracle 12.2 EXPDP Fails Exporting Full PDB with ORA-39126 On KUPW$WORKER.FETCH_XML_OBJECTS

This issue happens in Oracle database 12.2 or higher version, the example in this post happened in 19.13.

Configure Reverse Path Filter parameter "rp_filter" on Oracle Linux and Red Hat Enterprise Linux

When installing Oracle Grid Infrastructure (GI) 12c or higher version (18c, 19c, 21c), multiple network interfaces (NIC) can be used as private interconnection to implement inter-communication load balance and failover. However, if this configuration is adopted on Oracle Linux (OL) 6 or Red Hat Enterprise Linux (RHEL) 6 or higher, the GI installation prerequists checking shows error 

Oracle Cloud Infrastructure Plugin xxx not present for instance ocid1.instance.oc1.*

When you enable or configure moniter or managerment features on compute instance in Oracle Cloud Infrastructure (OCI), you have to enable the relavant Oracle Cloud Agent plugin. 

Oracle 19c GI installation failed with PRVG-13605 : Query of chrony daemon for its time sources could not be performed

The issue happens on Oracle Linux / Red Hat Enterprise Linux 7/8 on which chronyd is adopted as the network time protocol daemon instead of ntpd. When installing Oracle Grid Infrastructure 19c on these platform, the installation fails during prerequisit check, the message shows that

Verifying Network Time Protocol (NTP) ...FAILED
  Verifying chrony daemon is synchronized with at least one external time
  source ...FAILED
  rac01: PRVG-13605 : Query of chrony daemon for its time sources could not
         be performed on node "rac01".
         PRVG-2043 : Command "/usr/bin/chronyc sources " failed on node
         "rac01" and produced the following output:
         506 Cannot talk to daemon

  rac02: PRVG-13605 : Query of chrony daemon for its time sources could not
            be performed on node "rac02".
            PRVG-2043 : Command "/usr/bin/chronyc sources " failed on node
            "rac02" and produced the following output:
            506 Cannot talk to daemon

EM 12c/13c Send Email Notification When OMS or Repository Database Down

In Oracle Enterprise Manager 12c/13c deployment, normally the OMS is responsible for sending all metric alert notifications, but in cases where the OMS or repository database is down, it is not able to do this. Therefore,  the Out of Band email notification is introduced as a backup mechanism for sending email notification when the OMS or repository database itself is down.

EM 13c Agent is unreachable as its first severity has not yet come after blackout end

The agent status shows "Agent Unreachable (Post Blackout)" in Oracle Enterprise Manager 13c console. On the agent home page, it shows following error message,

  Agent is unreachable as its first severity has not yet come after blackout end.

It is seen in EM 13c, can can be fixed by running following commands on agent host,

  ${AGENT_INST_HOME}/bin/emctl stop agent

  ${AGENT_INST_HOME}/bin/emctl  clearstate agent

  ${AGENT_INST_HOME}/bin/emctl start agent

RMAN left defunct server processes and NetBackup nborautil processes

RMAN jobs can successfully backup database to tape with NetBackup, but leave server processes (RMAN channels) and NetBackup nborautil processes running. The processes look like defunct processes.

Mount DVD/CDROM with command on Linux CentOS / Red Hat / Oracle Linux / Ubuntu

 Minimal install is an important security for deploying Linux. It means only essential packages are installed. Therefore, GUI is usually not available. It becomes helpful to know how to mount CDROM/DVD when you need to install packages/software from DVD.

Oracle 19c Installation on Red Had Enterprise Linux 8 / Oracle Linux 8 – [INS-08101] Unexpected error while executing the action at state: ‘supportedOSCheck’

When installing Oracle 19c Grid Infrastructure (GI) or 19c Database (runInstaller), got following error,

[INS-08101] Unexpected error while executing the action at state: 'supportedOSCheck'

Error details,

Cause - No additional information available.

Action - Cantact Oracle Spport Services or refer to the software manual.

Summary
 - java.lang.NullPointerException

Use oradebug To List All Internal Events Set In Oracle Database

Oracle internal events can be set at both sesson level and system level as following,

Identify SQL statements consuming temporary tablespace

You may have to find out the SQL statements which are using temporary tablespace when you get storage pressure for temporary tablespace.

Oracle 19c root.sh not working while gridSetup.sh switchGridHome to software-only installation

When the command "griddSetup.sh -switchGridHome" is used to perform Oracle database 19c out of place (OOP) patching, it will prompt to run root.sh on each cluster node. And root.sh will switch Grid Home from old one (without new patches) to new one (applied with new patches) on each node and also patch Grid Infrastructure Management Repository (GIMR) database on last node of the cluster.

EM 12c/13c Agent Unreachable (Agent is running but is currently not read to accept client requests)

EM 12c/13c create Agent Unreachable alerts as follows: 

Host=host01.dbaplus.ca 
Target type=Agent 
Target name=host01.dbaplus.ca:3872 
Categories=Availability 
Message=Agent Unreachable (REASON = The agent is running but is currently not ready to accept client requests). Host is reachable. 
Severity=Critical 
Event reported time=Nov 6, 2021 12:36:48 PM EDT 
Operating System=SunOS
Platform=sparc
Event Type=Target Availability 
Event name=Status 
Availability status=Agent Unreachable
Update Details:
Agent Unreachable (REASON = The agent is running but is currently not ready to accept client requests). Host is reachable.

Javascript/CSS: Add Copy-to-Clipboard Button in HTML Code Example

When feeling tired to select the text before copying them, I decide to add a COPY button to every code example block in my blog. The button will copy the whole example block to clipboard. I reached it through 4 steps.

Javascript/CSS: Add Line Number to HTML Source Code Block

 When I shared the source code in my blog before, I used to reference source code by highlighting the code lines with HTML tag. It was not an issue until I had many references to different lines of a long clode block. It could take too much of my time to highlight or mark the reference when I post an article. Therefore, I added the line number to the source code in my posts. The line-numbered code block looks like,

EM 12c/13c The listener is down: Failed to run lsnrctl

The listener is up and running. However, the lisener target shows as Down in the Oracle Enterprise Manager Cloud Control Console and the incident message as following,

The listener is down: Failed to run lsnrctl.

Change SYS password in Oracle Data Guard

In Oracle Data Guard configuration, redo transport uses Oracle Net sessions to transport redo data. These redo transport sessions are authenticated using either the Secure Socket Layer (SSL) protocol or a remote login password file. Most time, remote login password file is adopted because of the difficulty of meeting SSL authentication requirements.

Database startup failed with ORA-600 [dbgripmg_2: infinite init action] [ADR_CONTROL_AUX]

Oracle database startup failed with ORA-00600 as following

SQL> startup

ORACLE instance started.

AQ Queue Monitor Does Not Change Message MSG_STATE from WAIT to READY on RAC

In RAC database, the Advanced Queue (AQ) message MSG_STATE (column of view AQ$<QUEUE_TABLE>) stays with value 'WAIT' and will not be changed to 'READY' any more. It usually happens after database was shut down with immediate/abort option followed by database patching/upgrading. 

EM 12c/13c Update Oracle Home Path of Targets with SQL

 As out-of-place patching can dramatically help minimize database downtime, especially when multiple databases run out of same home, it does not require all databases shut down at same time, more and more DBA adopt this method. However, if you are patching a home which host multiple databases, you may feel frustrated to update the databases' Oracle Home property in Oracle Enterprise Manage by clicking through different windows and changing it one by one. Now, the first question you will ask is how I can update all databases at one time. The answer is to run SQL (PL/SQL) in EM repository database.

EM 12c/13c Change Lifecycle Status with SQL

The Lifecycle Status property of EM targets is often used to prioritize the notification of incident rule. For example, DBA will be paged while database which Lifecycle Status is 'Production' crashed, and only emailed for 'Test' database. This post is going to show how to use sql scripts to find out targets with different Lifecycle Status and how to change the Lifecycle Status.

EM 12c/13c How to find out new discovered targets with SQL

 When agent is deployed to new host, or new targets is installed or created on existing hosts, Oracle Enterprise Manger (EM) Cloud Control can discover the targets automatically. However, EM does not promote the new discovered targets automatically.

Script Run datapatch against all running instance in parallel

This script can be used to run datapatch against all currently running instances in parallel to apply sql patches after patches are applied on Oracle homes. It is helpful for post patching operations. It works for different instances running out of different Oracle homes and different home with different owners.

Install PostgreSQL on RHEL/OL/CentOS 6/7/8

There are many ways to install PostgreSQL on Linux box. Here, I am going to use yum to install different version of PostgreSQL on Red Hat Enterprise Linux (RHEL) 7/8, it also works for Oracle Linux (OL) / CentOS 7/8.

Java Stored Procedure failed with java.lang.OutOfMemoryError

Oracle database Jave stored procedure failed with "java.lang.OutOfMemoryError", the error stack looks like

ORA-29532: Java call terminated by uncaught Java exception: java.lang.OutOfMemoryError

ORA-06512: at "USER01.MYJAVAPROC", line 28

ORA-06512: at line 7

This error is thrown when there is insufficient space to allocate an object in the Java heap. In this case, The Java garbage collector cannot make space available to accommodate a new object, and the heap cannot be expanded further.  

Oracle 19.11 roothas.sh failed with "Out of memory" on AIX

When applying Oracle GI Release Update 19.11.0.0.210420 on AIX, command "roothas.sh -postpatch" failed with "Out of memory" as following

[root@host01]# /u01/app/oracle/product/19.0.0/grid_1/crs/install/roothas.sh -postpatch

Using configuration parameter file: /u01/app/oracle/product/19.0.0/grid_1/crs/install/crsconfig_params

Configure yum with proxy server on RHEL/OL/Fedora

When using yum to maintain packages on hosts running Red Hat Enterprise Linux (RHEL), Oracle Linux (OL) or Fedora, you may have to configure proxy option if the host is running behind firewall.

How to Permanently Change PowerShell Prompt

 The PowerShell command prompt indicates that PowerShell is ready to run a command,

PS C:\>

It is determined by the built-in Prompt function and can be customized by running following command to re-define Prompt function,

  function prompt {"<Script block>"}

Here, <Script block> is script block which will determine/generate prompt value (character string). For example, following have prompt include current date and time

PS C:\>

PS C:\> function Prompt {"$(Get-Date)> "}

06/03/2021 11:39:23>

06/03/2021 11:39:25>

The change is only valid for current session, the prompt of new session is still default value. In order to keep new prompt for all sessions, you have to create your own Prompt function and saving it in your PowerShell profile as following,

1. Find out your PowerShell profile file with "$profile"

PS C:\> $profile

C:\Users\admin\Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1

PS C:\>

2. Add customized Prompt function to profile

If the file or directory does not exist, you can manually create it, then add customized Prompt function to the file. For example, add following lines

function Prompt { "PS [" + ${ENV:USERNAME} + "@" + ${ENV:COMPUTERNAME} + "]> "}

The prompt will be in the format "PS [user-name@computer-name]> " in all new PowerShell sessions.

Grid Infrastructure 12.2 restore OCR, Voting File and mgmtdb when disk group corrupted

For some reason, Oracle desupported the placement of OCR and voting files directly on a shared file system from Grid Infrastructure 12.2 until rescinding the desupport for Standalone Clusters from 19.3. Therefore, when GI 12.2 is installed, OCR, Voting file, and OCR backup location are, by default, configured in the ASM disk group, and mostly likely in the same disk group. When the disk group cannot be mounted because of any issues, the cluster will not be brought up anymore.

Technically, GI has to be re-configured as like a new installation, that could be a big job. However, it may not be that bad. Although 12.2 does not allow you have OCR backup location out of ASM disk group, DBA still can copy the OCR backup file from ASM disk group to file system with command 'asmcmd cp'. I am going to demonstrate how we can maximize the opportunity of bringing the cluster backup without rebuild/reinstall it.

Windows How to log all output on the console to text file

Windows Command Prompt console does not have built-in facility to log the console output to file. In order to implement logging function, PowerShell has to be used instead of normal command console.

To enable logging, running following command under PowerShell prompt,

  Start-Transcript [-Path] "<file-name>" [-Append]

Here, 

  -Path parameter is used to specify the file "<file-name>" and "<file-name>" is full path of log file in which output messages will be saved

  -Append Indicates that the logging text will be added to the end of an existing file instead of overriding.

To stop logging, running command

  Stop-Trasnscript

Note: PowerShell can be started on Windows by clicking "Windows PowerShell" applicaiton or running command "PowerShell" in normal "Command Prompt" console, but DO NOT start PowerShell in "Windows Terminal". If the PowerShell is started from "Window Terminal", Start-Transcript may not be able to log everything. For example, non-Windows built-in command (e.g. sqlplus) output cannot be completely logged.

  

Example

PS> Start-Transcript -Path "C:\temp\test.log"

Transcript started, output file is C:\temp\test.log

PS>

PS> sqlplus system/oracle@orcl

SQL*Plus: Release 12.2.0.1.0 Production on Sun May 9 20:30:15 2021

Copyright (c) 1982, 2016, Oracle.  All rights reserved.

Last Successful login time: Tue Apr 13 2021 16:46:29 -04:00

Connected to:

Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production

system@orcl> select host_name from v$instance;

HOST_NAME

----------------------------------------------------------------

host01

system@orcl> exit

Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production

PS>

PS> Stop-Transcript

Transcript stopped, output file is C:\temp\test.log

The content of file C:\temp\test.log

**********************

Windows PowerShell transcript start

Start time: 20210509202857

Username: dbaplus

RunAs User: dbaplus

Configuration Name: 

Machine: wkstn01 (Microsoft Windows NT 10.0.19042.0)

Host Application: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Process ID: 15732

PSVersion: 5.1.19041.906

PSEdition: Desktop

PSCompatibleVersions: 1.0, 2.0, 3.0, 4.0, 5.0, 5.1.19041.906

BuildVersion: 10.0.19041.906

CLRVersion: 4.0.30319.42000

WSManStackVersion: 3.0

PSRemotingProtocolVersion: 2.3

SerializationVersion: 1.1.0.1

**********************

Transcript started, output file is C:\temp\test.log

PS> sqlplus system/oracle@orcl

SQL*Plus: Release 12.2.0.1.0 Production on Sun May 9 20:30:15 2021

Copyright (c) 1982, 2016, Oracle.  All rights reserved.

Last Successful login time: Tue Apr 13 2021 16:46:29 -04:00

Connected to:

Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production

system@orcl> select host_name from v$instance;

HOST_NAME

----------------------------------------------------------------

host01

system@orcl> exit

Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production

PS> Stop-Transcript

**********************

Windows PowerShell transcript end

End time: 20210509203043

**********************

OEM 12c/13c Database Target Discovered and Named with host name as suffix

 When EM discovers database targets, it generates default target name for the database in one of following formats,

  db_unique_name.db_domain   if both parameters db_unique_name and db_domain are set

  db_unique_name             if parameter db_unique_name is set, but db_domain is not set

  db_name.db_domain          if parameter db_unique_name is not set, but db_domain is set

  db_name                    if neither db_unique_name nor db_domain is set

EM discovery script retrieves these parameters' values from parameter file (pfile or spfile) of the database, not from running instance. If the discovery process has issue to locate or process parameter file, EM will name database target in format,

  <sid>_<hostname>

  

Therefore, when you find the new discovered database target is named in this format, it means EM agent discovery script has issue with parameter file. The details can be found from agent trace file "<AGENT_INST_HOME>/sysman/log/emagent_perl.trc". Most popular error messages look like

  ERROR:  initParameterFileUtl::convertSPFileToPFile: Failed to convert spfile

  

or

  ERROR:  initParameterFileUtl::getParameterFile: Cannot find any init parameter file for instance <instancename> in oracle home  <oracle_home>

For example, when Oracle Restart (standalone Grid Infrastructure) is installed and ASM storage is configured on server host1.dbaplus.ca, DBCA creates a database orcl (sid & db_name) in ASM diskgroup, the spfile will also be saved in ASM diskgroup and no parameter file (pfile/spfile) will be created under directory <ORACLE_HOME>/dbs. The database will be discovered by EM with default name orcl_host1.dbaplus.ca and you will see errors in agent trace file "emagent_perl.trc",

oracledb.pl: 2021-05-04 04:03:08,923: INFO:  DB_LISTENER_DISCOVERY:  processing sid="orcl"

oracledb.pl: 2021-05-04 04:03:08,926: ERROR:  initParameterFileUtl::getParameterFile: Cannot find any init parameter file for instance orcl in oracle home /u01/app/oracle/product/19.9.0/dbhome_1/dbs

oracledb.pl: 2021-05-04 04:03:08,930: ERROR:  initParameterFileUtl::getParameterFile: Cannot find any init parameter file for instance orcl in oracle home /u01/app/oracle/product/19.9.0/dbhome_1/dbs

oracledb.pl: 2021-05-04 04:03:09,065: ERROR:  initParameterFileUtl::getParameterFile: Cannot find any init parameter file for instance orcl in oracle home /u01/app/oracle/product/19.9.0/dbhome_1/dbs

oracledb.pl: 2021-05-04 04:03:09,069: ERROR:  initParameterFileUtl::getParameterFile: Cannot find any init parameter file for instance orcl in oracle home /u01/app/oracle/product/19.9.0/dbhome_1/dbs

The reason is that discovery script cannot find parameter file from <ORACLE_HOME>/dbs. To fix this problem, create a pfile 'initorcl.ora' under <ORACLE_HOME>/dbs with following content,

   spfile='<full path of spfile saved in diskgroup>'

Note: DO NOT leave any SPACE character at the beginning of the line (before word "spfile"). If you did, you will not see any errors in the trace file, but the target name will be <sid>_<hostname>.

Sample init file

$ srvctl config database -db orcl | grep spfile

Spfile: +DATA/orcl/PARAMETERFILE/spfile.919.1071658047

$

$ echo "spfile='+DATA/orcl/PARAMETERFILE/spfile.919.1071658047'" > $ORACLE_HOME/dbs/initorcl.ora

$

$ cat $ORACLE_HOME/dbs/initorcl.ora

spfile='+DATA/orcl/PARAMETERFILE/spfile.919.1071658047'

Oracle 19.11 deinstall failed with "ERROR: oracle/rat/tfa/util/ManageTfa"

After Oracle database 19c home is applied Release Update 19.11.0.0.210420, the home cannot be de-installed anymore.

The deinstall utility will fail with errors,

######################## DEINSTALL CLEAN OPERATION START ########################

## [START] Preparing for Deinstall ##

Setting LOCAL_NODE to thanos

Setting CRS_HOME to false

Setting oracle.installer.invPtrLoc to /tmp/deinstall2021-05-02_07-34-15PM/oraInst.loc

Setting oracle.installer.local to false

ERROR: oracle/rat/tfa/util/ManageTfa

Exited from program.

############# ORACLE DEINSTALL TOOL END #############

In deinstall error log,

java.lang.reflect.InvocationTargetException

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

        at java.lang.reflect.Method.invoke(Method.java:498)

        at oracle.install.db.deinstall.wrapper.Deinstall.callCleanImpl(Deinstall.java:1876)

        at oracle.install.db.deinstall.wrapper.Deinstall.main(Deinstall.java:907)

Caused by: java.lang.NoClassDefFoundError: oracle/rat/tfa/util/ManageTfa

        at oracle.install.db.deinstall.core.PrepForOUIDeinstall.cleanConfig(PrepForOUIDeinstall.java:187)

        ... 6 more

Caused by: java.lang.ClassNotFoundException: oracle.rat.tfa.util.ManageTfa

        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)

        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)

        ... 7 more

Looks like something related to TFA is missing after RU 19.11 is applied.

Workaround,

Roll back RU 19.11, then re-run deinstall utility.

Oracle 19c runInstaller failed with "undefined reference to 'jox_eujs_nowait_'"

Updated on Thursday, Oct 21, 2021 with following,

The error is also found with RU 19.13 (19.13.0.0.211019).
I believe it is same thing with 19.12, though I did not test it.

When installing Oracle 19c with patch apply of Database RU 19.11 and OJVM RU 19.11, runInstaller failed with message

   Error in invoking target 'irman ioracle idrdactl idrdalsnr idrdaproc' of makefile '/u01/app/oracle/product/19.11.0/dbhome_1/rdbms/lib/ins_rdbms.mk'. See /u01/app/oraInventory/logs/InstallActions2021-05-01_08-40-24PM/installActions2021-05-01_08-40-24PM.log for details.

OEM 13c Software Standardization Advisor Returns Collection Errors

In EM 13c console, access "Software Standardization Advisor" as following,

 Targets -> Databases -> Administration -> Software Standardization Advisor

 

You could see a number beside "Collection Errors" for database and/or Grid infrastructure home. The issue can be found in EM 13.3, 13.4 and 13.5.

Click the number beside "Collection Errors", all Oracle home targets which have "Metric Collection Errors" are listed with Path, Host and Owner information. 

Click the name of Oracle Home Target to show home page of the target, at the bottom of "Summary" section, click link "Found 1 Metric Collection Error(s)" beside "Reason".

Metric "Files affected by a Patch" has following "Message"

     java.lang.UnsupportedOperationException: Collection Result Maximum Flood Control Level Exceeded

The issue can be reproduced / verified by run following command on the host where the Oracle home exists,

  <AGENT_HOME>/bin/emctl control agent runCollection <Target name of the Oracle home>:oracle_home oracle_home_config

$ emctl control agent runCollection OraHome12_host01:oracle_home oracle_home_config

Oracle Enterprise Manager Cloud Control 13c Release 5  

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

---------------------------------------------------------------

EMD runCollection completed successfully

Following lines are found from the log file "<AGENT_INST_HOME>/sysman/log/gcagent.log"

2021-04-29 20:25:18,725 [668:D9EFD971:HTTPListener--668 (DispatchRequests emdctl@28474@amber.corp.toronto.ca=>[161974231840001])] INFO - >>> Dispatching request: RunCollectionRequest <<<

2021-04-29 20:25:22,986 [1129:A9983BB8:GC.OnDemand.8 (oracle_home:OraHome12_host01:Real-time collection oracle_home_config) (oracle_home:OraHome12_host01:oracle_home_config:PatchFixedBug)] WARN - Result set exceeding min flood control level

2021-04-29 20:25:22,992 [1129:A9983BB8:GC.OnDemand.8 (oracle_home:OraHome12_host01:Real-time collection oracle_home_config) (oracle_home:OraHome12_host01:oracle_home_config:PatchFixedBug)] WARN - Result set exceeding min flood control level

2021-04-29 20:25:24,398 [1129:A9983BB8:GC.OnDemand.8 (oracle_home:OraHome12_host01:Real-time collection oracle_home_config) (oracle_home:OraHome12_host01:oracle_home_config:PatchFixedBug)] WARN - Result set exceeding min flood control level

2021-04-29 20:25:24,406 [1129:GC.OnDemand.8 (oracle_home:OraHome12_host01:Real-time collection oracle_home_config) (oracle_home:OraHome12_host01:oracle_home_config:PatchedFile)] ERROR - Result set exceeded max flood control level

2021-04-29 20:25:24,408 [1129:GC.OnDemand.8 (oracle_home:OraHome12_host01:Real-time collection oracle_home_config) (oracle_home:OraHome12_host01:oracle_home_config:PatchedFile)] ERROR - oracle_home:OraHome12_host01:oracle_home_config:PatchedFile

java.lang.UnsupportedOperationException: Collection Result Maximum Flood Control Level Exceeded

at oracle.sysman.emSDK.agent.datacollection.CollectionResult.performFloodControl(CollectionResult.java:459)

at oracle.sysman.emSDK.agent.datacollection.CollectionResult.addCollectionRow(CollectionResult.java:662)

at oracle.sysman.gcagent.addon.fetchlet.osfetchlet.BaseOSFetchlet.getOSMetric(BaseOSFetchlet.java:1157)

at oracle.sysman.gcagent.addon.fetchlet.osfetchlet.BaseOSFetchlet.getMetric(BaseOSFetchlet.java:476)

at oracle.sysman.gcagent.target.interaction.execution.FetchletFactory.getMetric(FetchletFactory.java:437)

at oracle.sysman.gcagent.target.interaction.execution.ExecuteTask.executeQueryDescriptor(ExecuteTask.java:1284)

at oracle.sysman.gcagent.target.interaction.execution.ExecuteTask.runTask(ExecuteTask.java:3167)

From the log, we can find two exceptions:

  1. When collectiong metric PatchFixedBug (Bugs fixed by Patch), got WARN message "Result set exceeding min flood control level"

  2. When collectiong metric PatchedFile (Files affected by Patch), got ERROR message "Result set exceeded max flood control level"

The ERROR can be also confirmed by collecting specific metric "Files affected by Patch" with command

  <AGENT_HOME>/bin/emctl getmetric agent <Oracle Home target name>,oracle_home,PatchedFile

$ emctl getmetric agent OraHome12_host01,oracle_home,PatchedFile

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

EMD getmetric error: Collection Result Maximum Flood Control Level Exceeded

Solution

1.  Agent side settings:

  * Set Min flood control value "CollectionResults.MaximumRowsFloodControlMin" to remove WARN message

    <AGENT_HOME>/bin/emctl setproperty agent -allow_new -name CollectionResults.MaximumRowsFloodControlMin -value 5000

  * Set Max flood control value "CollectionResults.MaximumRowsFloodControlMax" to fix ERROR issue

  

    <AGENT_HOME>/bin/emctl setproperty agent -allow_new -name CollectionResults.MaximumRowsFloodControlMax -value 50000

  * Verify the new value of properties with commands

  

    <AGENT_HOME>/bin/emctl getproperty agent -name CollectionResults.MaximumRowsFloodControlMin

    <AGENT_HOME>/bin/emctl getproperty agent -name CollectionResults.MaximumRowsFloodControlMax

    Or reviewing agent property file "<AGENT_INST_HOME>/sysman/config/emd.properties"

    grep 'CollectionResults' <AGENT_INST_HOME>/sysman/config/emd.properties

  * Manually start metric collection to reset the error status or you can wait until next scheduled metric collection job running (by default, every 24 hours)

    <AGENT_HOME>/bin/emctl control agent runCollection <Oracle home target name>:oracle_home oracle_home_config

  * In case you change your mind (or want to see the errors) the new value of properties can be cleared/removed with commands

    <AGENT_HOME>/bin/emctl clear_property agent -name CollectionResults.MaximumRowsFloodControlMin

    <AGENT_HOME>/bin/emctl clear_property agent -name CollectionResults.MaximumRowsFloodControlMax

Sample output

$ emctl getproperty agent -name CollectionResults.MaximumRowsFloodControlMin

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

CollectionResults.MaximumRowsFloodControlMin is not a valid configuration property

$ emctl getproperty agent -name CollectionResults.MaximumRowsFloodControlMax

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

CollectionResults.MaximumRowsFloodControlMax is not a valid configuration property

$ emctl setproperty agent -allow_new -name CollectionResults.MaximumRowsFloodControlMin -value 5000

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

EMD setproperty succeeded

$ emctl setproperty agent -allow_new -name CollectionResults.MaximumRowsFloodControlMax -value 50000

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

EMD setproperty succeeded

$ emctl getproperty agent -name CollectionResults.MaximumRowsFloodControlMin

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

CollectionResults.MaximumRowsFloodControlMin=5000

$ emctl getproperty agent -name CollectionResults.MaximumRowsFloodControlMax

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

CollectionResults.MaximumRowsFloodControlMax=50000

$ grep 'CollectionResults' /u01/app/oracle/em13.5/agent/agent_inst/sysman/config/emd.properties

CollectionResults.MaximumRowsFloodControlMin=5000

CollectionResults.MaximumRowsFloodControlMax=50000

2. OMS side settings:

  * Setting the min value:

    

    <OMS_HOME>/bin/emctl set property -name CollectionResults.MaximumRowsFloodControlMin -value 5000

  * Setting the max value:

    

    <OMS_HOME>/bin/emctl set property -name CollectionResults.MaximumRowsFloodControlMax -value 50000

  * Verify the new value of properties

  

    <OMS_HOME>/bin/emctl get property -name CollectionResults.MaximumRowsFloodControlMin

    <OMS_HOME>/bin/emctl get property -name CollectionResults.MaximumRowsFloodControlMax

    

  * Delete new properties if they are not needed

    <OMS_HOME>/bin/emctl delete property -name CollectionResults.MaximumRowsFloodControlMin

    <OMS_HOME>/bin/emctl delete property -name CollectionResults.MaximumRowsFloodControlMax

Sample output

[oracle@oms]$ emctl get property -name CollectionResults.MaximumRowsFloodControlMin

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

SYSMAN password:

Value for property CollectionResults.MaximumRowsFloodControlMin for oms All Management Servers is null

[oracle@oms]$ emctl get property -name CollectionResults.MaximumRowsFloodControlMax

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

SYSMAN password:

Value for property CollectionResults.MaximumRowsFloodControlMax for oms All Management Servers is null

[oracle@oms]$ emctl set property -name CollectionResults.MaximumRowsFloodControlMin -value 5000

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

SYSMAN password:

Property CollectionResults.MaximumRowsFloodControlMin has been set to value 5000 for all Management Servers

OMS restart is not required to reflect the new property value

[oracle@oms]$ emctl set property -name CollectionResults.MaximumRowsFloodControlMax -value 50000

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

SYSMAN password:

Property CollectionResults.MaximumRowsFloodControlMax has been set to value 50000 for all Management Servers

OMS restart is not required to reflect the new property value

[oracle@oms]$ emctl get property -name CollectionResults.MaximumRowsFloodControlMin

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

SYSMAN password:

Value for property CollectionResults.MaximumRowsFloodControlMin at Global level is 5000

[oracle@oms]$ emctl get property -name CollectionResults.MaximumRowsFloodControlMax

Oracle Enterprise Manager Cloud Control 13c Release 5

Copyright (c) 1996, 2021 Oracle Corporation.  All rights reserved.

SYSMAN password:

Value for property CollectionResults.MaximumRowsFloodControlMax at Global level is 50000

OEM 13c EMGC_ADMINSERVER & EMGC_OMS1 target status show DOWN when emctl secure wls with cut certificate

 When custom certificate is configured for OEM 13c, WebLogic Servers installed as part of Enterprise Manager Cloud control (Administration Server and Managed Servers) can be secured with custom certificate using following command,

   $OMS_HOME/bin/emclt secure wls

However, the WebLogic Servers and their deployments could show down in OEM console after secured with custom certificate, though they are still running well.

The reason is that the CA involved in issuing the custom certificate for OMS is not "well known", at least it is not accepted by Oracle as default trusted CA. When agent running on OMS server communicates with WebLogic Servers (WLS), WLS is using the custom certificate as his own identification, but agent cannot find trusted certificates of CA involved in issuing the custom certificate from agent's local keystore. Therefore, agent cannot verify the validation of WLS's certificate, and stops the communication with WLS.

The quick fix is to import the certificate of each CA involved in issuing the ticket into agent local keystore with following command,

    $AGENT_HOME/bin/emctl secure add_trust_cert_to_jks -trust_certs_loc <ca_certificate_file> -alias <certificate_alias> [-password <keystore_pwd>]

Here, <certificate_alias> is used to identify the certificates saved in the keystore, they must be unique for each certificate, <keystore_pwd> is the password of the keystore, the default value is welcome.

For example, I have installed a CA in my lab network, and the CA issued certificate to my OMS server. The two of my CA server certificates (root certificate & intermediate certificate) has to be imported into agent keystore as following,

 $AGENT_HOME/bin/emctl stop agent

 $AGENT_HOME/bin/emctl secure add_trust_cert_to_jks -password welcome -alias dbaplus-root -trust_certs_loc /home/oracle/Root_CA_Certificate.txt

 $AGENT_HOME/bin/emctl secure add_trust_cert_to_jks -password welcome -alias dbaplus-intermediate -trust_certs_loc /home/oracle/Intermediate_CA_Certificate.txt

 $AGENT_HOME/bin/emctl start agent

List the certificates imported into agent monitor keystore,

 $AGENT_HOME/jdk/bin/keytool -list -alias <certificate_alias> -keystore   $AGENT_INSTANCE_HOME/sysman/config/montrust/AgentTrust.jks -storepass welcome -v

If needed, the certificates can be removed from keystore as following

 $AGENT_HOME/jdk/bin/keytool -delete -alias <certificate_alias> -keystore   $AGENT_INSTANCE_HOME/sysman/config/montrust/AgentTrust.jks -storepass welcome -v

OEM 13c Target "EM Jobs Service" shown as down in EM Console while all associated targets are up

"EM Jobs Service" target status is showing down in Enterprise Manager Cloud Control(EM) console even though all associated targets are up and running. It could be an issue with the metric collection definition. Usually it is seen at post blackout of associated targets.

The status of EM Jobs Service is aggregated target status, it is calculated based on the status of the associated targets. The associated targets and calculation logic are defined by default when the system is installed, and you can change it later.

The issue can be fixed by changing/restoring Availability Definition of the service as following,

1. In EM Console navigate to the following menu

     Targets > Services > Click on "EM Jobs Service" target

2. In "EM Jobs Service" home page, click on the tab "Monitoring Configuration" and then click on the link "Availability Definition"

3. Take a screen shot of the "Availability Definition" configurations, change the definition to a different option and click OK to save it.

    For Instance, If Availability Definition is to consider "All key components are up" (default definition), change it to "At least one key component is up" and save change.

4. Now revert "Availability Definition" of the service back to original configration by following the same procedure.

    For instance, change and save "Availability Definition" to "All key components are up"

The target status shows up as all components are up.

OEM 12c/13c Agent Deployment fails with "Remote Validatons: Shell Path Validation Failed"

When deploying agent on OEM 12c/13c using 'Add Host Targets' wizard, the deployment fails with

Remote Validations:  Shell Path validation failed

Cause:  Shell path is incorrect or not defined.:/bin/bash(SH_PATH),-c(SH_ARGS) on host <host name> 

Recommendation:  Check the property values in the following files in this order, ssPaths_<plat>.properties or sPaths.properties or Paths.properties, in "/u01/app/oracle/em13.4/middleware/oui/prov/resources" directory. If the property values are correct, then ensure the login user account is enabled for remote logins.For more details, refer to the Oracle Enterprise Manager Basic Installation Guide.

Most common reason why it happened could be one of following

1. Shell (sh, bash & ksh) location is different from OEM defined location

OEM defined shell location can be found from file 'ssPaths_<platform>.properties' under directory '$OMS_HOME/oui/prov/resources'. For example, if the errors happens on deploying agent to AIX host, type the content of file 'ssPaths_aix.properties' which looks like following

SH_PATH=/bin/bash
SH_ARGS=-c
SHELL_PATH=/bin/bash
SHELL_ARGS=-c
KSH_PATH=/usr/bin/ksh
RMDIR_ARGS=
#the date should be in the format of year:month:date:hour:minute:second
DATE_ARGS=-u +%y:%m:%d:%H:%M:%S
PING_PATH=/usr/sbin/ping
SSH_KEYGEN_PATH=/usr/bin/ssh-keygen
TAR_EXCLUDE_ARGS=X
TAR_INCLUDE_ARGS=-I
DF_COL_NAME=avail
SSH_HOST_KEY_LOC=/etc/ssh

On the host where agent is going to be installed, check if the executables/shell exist and are located at same place as in the OEM file 'ssPaths_<platform>.properties'. In previous example files, the executables/shell are

/bin/bash
/usr/bin/ksh
/usr/bin/ssh-keygen

If it does not exist, you have to install it. If it exists but is located at different directory, edit the OEM file and replace the shell/executable path with the directory where the shell/executable is.

2. Incorrect user name or password configured in Named Credential which is used to deploy the agent

If incorrect user name or password is used, the error could also happen. If you do not have the password of the user defined in Named Credential, the issue can be confirmed by checking following log file on oms server,

  

$OMS_INSTANCE_BASE/em/EMGC_OMS1/sysman/agentpush/<timestamp>/applogs/<host_name>_deploy.log

For example, the failed deployment log is

  /u01/app/oracle/em13.4/gc_inst/em/EMGC_OMS1/sysman/agentpush/2021-04-13_12-58-49-PM/applogs/host01.lab.dbaplus.ca_deploy.log

And following message is found in the log

2021-04-13_12-59-55:INFO:===VALIDATION===:Checking SH_PATH on target nodes
2021-04-13_12-59-55:INFO:isWrongShPath:remotePathPropertiesLoc:/u01/app/oracle/em13.4/middleware/oui/prov/resources Platform id:212
2021-04-13_12-59-55:INFO:NODES=host01.lab.dbaplus.ca
2021-04-13_12-59-55:INFO:Running cmd /bin/bash -c /bin/true on node host01.lab.dbaplus.ca
2021-04-13_12-59-55:INFO:Action description Execution of command /bin/bash -c /bin/true  on host host01.lab.dbaplus.ca
2021-04-13_12-59-55:INFO:Attempt :1 pty required false  with no inputs
2021-04-13_12-59-56:INFO:/bin/bash -c /bin/true execution failed on host host01.lab.dbaplus.ca
2021-04-13_12-59-56:INFO: OUT null
2021-04-13_12-59-56:INFO: ERR WARNING: Your password has expired.
Password change required but no TTY available.

We can see that the password has expired, ask system administrator to reset the password and also update the password for Named Credential.

The easist way to eliminate this error because of user name or password issue is to ask system administrator to test the login manually out of OEM.

OEM 13c Discovering WebLogic Domain failed to save Node Manger target with error 'This target requires a local Management Agent'

When discovering or refreshing a WebLogic Domain or Fusion Middleware Farm in Enterprise Manager (EM) 13.4 Cloud Control, the Node Manager target is not saved. The error is shown in EM:

Failed to save NM_xxx_x(Oracle WebLogic Node Manager) on host <IP/host name>. This target requires a local Management Agent, but a local Management Agent was not found.  In order to add this target, you need to install a Management Agent on the same host as the target and then perform a "Refresh WebLogic Domain" operation.

The agent has been installed on the host. The errors happened because of difference between Listen Address of Node Manager configuration and host name of EM Agent URL. As a solution, the Listen Address Node Manager should be changed to host name of EM Agent URL.

Oracle explains it as incorrect configuration of Oracle WebLogic Node Manager. Therefore, it could happen on all release of EM 13c. However, I can only reproduce the problem in EM 13.1 and 13.4 when Listen Address of WebLogic Node Manager is configured with IP address instead of host name which is used by EM Agent URL and there is no problem with EM 13.2. Anyway, having both configuration use same host name is not bad idea.

Find out host name of EM agent URL with command <AGENT_HOME>/bin/emctl status agent

$ /u01/app/oracle/em13.4/agent/agent_13.4.0.0.0/bin/emctl status agent
Oracle Enterprise Manager Cloud Control 13c Release 4
Copyright (c) 1996, 2020 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
Agent Version          : 13.4.0.0.0
OMS Version            : 13.4.0.0.0
Protocol Version       : 12.1.0.1.0
Agent Home             : /u01/app/oracle/em13.4/agent/agent_inst
Agent Log Directory    : /u01/app/oracle/em13.4/agent/agent_inst/sysman/log
Agent Binaries         : /u01/app/oracle/em13.4/agent/agent_13.4.0.0.0
Core JAR Location      : /u01/app/oracle/em13.4/agent/agent_13.4.0.0.0/jlib
Agent Process ID       : 76282
Parent Process ID      : 76240
Agent URL              : https://host01.lab.dbaplus.ca:3872/emd/main/
Local Agent URL in NAT : https://host01.lab.dbaplus.ca:3872/emd/main/
Repository URL         : https://oms.lab.dbaplus.ca:4903/empbs/upload
Started at             : 2021-04-07 17:53:56
Started by user        : oracle
Operating System       : Linux version 4.1.12-124.46.4.1.el7uek.x86_64 (amd64)
...

---------------------------------------------------------------
Agent is Running and Ready

Change Listen Address of Node Manager to the host name of EM Agent URL in the WebLogic Admin Console as following,

1. Go to Node Manger configuraiton page

   Environment > Machines > [Machine Name] > Configuration > Node Manager

2. Click 'Lock & Edit' to enable edit mode

3. Set the value of "Listen Address" property to the host name given by previous command 'emctl status agent'

4. Click 'Save', then click 'Activate Changes'

Refresh or rediscover the domain, the Node Manger will be discovered successfully.

OEM 13.4 AgentPull.sh failed with '0403-011 The specified substitution is not valid for this command'

When using Oracle Enterprise Manager 13.4 AgentPull.sh to deploy Agent 13.4 on AIX server, got following error,

./AgentPull.sh[270]: platform=${platform/\)/%29}: 0403-011 The specified substitution is not valid for this command.

Line 270 in AgentPull.sh is

platform=${platform/\)/%29}

It is a bash statement which tries to replace right parenthesis with code '%29', it works for bash but not Bourne shell (sh). The problem is that the script has directive to have Unix/Linux to run the script under bourne shell

$ head AgentPull.sh
#!/bin/sh
#
# $Header: emcore/install/unix/AgentPull.sh.template /main/30 2019/12/19 21:29:10 vbhaagav Exp $
#
# AgentPull.sh
#
# Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
#
#    NAME
#      AgentPull.sh - <one-line expansion of the name>

The script works on most Linux servers because the /bin/sh is a symbolic link file linked to /bin/bash on these servers. Unfortunately, AIX is honest :), sh is sh and bash is bash, they are different.

As workaround, replace first line of AgentPull.sh '#!/bin/sh' with '#!/bin/bash'.

OEM 13.4 New Imported RuleSet False Evaluation of Lifecycle Status

If Rule Set is defined for targets based on Lifecycle Status, and the Rule Set is exported and imported into Enterprise Manager 13.4, the Rule Set will be always activated regardless of Lifecycle Status.

For example, two Rule Sets are created in source Enterprise Manager,

   Rule Set A for targets which Lifecycle Status is Production
   Rule Set B for targets which Lifecycle Status is Development

Both A and B are exported from source EM and imported into EM 13.4, and one target (no matter what value of Lifecycle Status) is brought down, both A and B will send out notification.

It can be fixed by manually editing the Rule Set. You do not need really to change anything of the Rule Set, just select the Rule Set and click Edit, then click Save.