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Wednesday, August 21, 2019

12.2: Preupgrade Utility Fails with ORA-06512: at "SYS.DBMS_PREUP"

While running 12.2 Pre-Upgrade Utility (manually or with DBUA) on 12.1 database, received following errors,
Error in preupgrade tool execution.
ERROR -
ERROR - Unable to run sqlplus due to:
ORA-06512: at "SYS.DBMS_PREUP", line 4401
ORA-06512: at "SYS.DBMS_PREUP", line 9714
ORA-06512: at line 8

declare
*
ERROR at line 1:
ORA-01426: numeric overflow
ORA-06512: at line 56

if you are executing the preupgrade tool from a standby database make sure the preupgrade tool has been executed in the primary database If you are executing the tool from Windows, please make sure you have given the appropriate permissions to the Oracle binaries owner.


This is the bug of the Pre-Upgrade Utility installed in current 12.2 home. It can be fixed by installing new version of the utility as following,

1. Download utility ZIP file from My Oracle Support following the instruction of document "How to Download and Run Oracle's Database Pre-Upgrade Utility (Doc ID 884522.1)"
  
2. The current available ZIP file for 12.2 (target upgrade-to version) is preupgrade_12201_cbuild_22_lf.zip, it contains following files,
   dbms_registry_basic.sql         
   dbms_registry_extended.sql
   preupgrade.jar
   preupgrade_driver.sql
   preupgrade_messages.properties
   preupgrade_package.sql

3. Unzip downloaded file to directory $ORACLE_HOME/rdbms/amdin, here $ORACLE_HOME is 12.2 home.

   Note: Rename existing files before unzipping, do not override any files.

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