Database 12.2 instance crashed with following messages in alert log,
2020-05-20T22:28:52.724801-04:00
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_asmb_15204374.trc (incident=320299):
ORA-04031: unable to allocate 4120 bytes of shared memory ("shared pool","unknown object","init_heap_kfsg","ASM extent pointer array")
Incident details in: /u01/app/oracle/diag/rdbms/orcl/orcl/incident/incdir_320299/orcl_asmb_15204374_i320299.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
2020-05-20T22:29:30.066864-04:00
NOTE: ASMB0 terminating
2020-05-20T22:29:30.067840-04:00
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_asmb_15204374.trc:
ORA-04031: unable to allocate 4120 bytes of shared memory ("shared pool","unknown object","init_heap_kfsg","ASM extent pointer array")
2020-05-20T22:29:30.070882-04:00
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_asmb_15204374.trc:
ORA-04031: unable to allocate 4120 bytes of shared memory ("shared pool","unknown object","init_heap_kfsg","ASM extent pointer array")
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_asmb_15204374.trc (incident=320300):
ORA-4031 [] [] [] [] [] [] [] [] [] [] [] []
Incident details in: /u01/app/oracle/diag/rdbms/orcl/orcl/incident/incdir_320300/orcl_asmb_15204374_i320300.trc
2020-05-20T22:29:31.376055-04:00
USER (ospid: 15204374): terminating the instance due to error 4031
From the alert log, we can find that asmb process (ospid: 15204374) wrote following errors into trace file orcl_asmb_15204374.trc
ORA-04031: unable to allocate 4120 bytes of shared memory ("shared pool","unknown object","init_heap_kfsg","ASM extent pointer array")
Then, the asmb process terminated the instance.
This issue happened after the database home was applied Oracle database Release Update April 2020 (12.2.0.1.200414).
It is a bug introduce by Release Update 12.2.0.1.200414, and can be fixed by apply patch 31341859.
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