REDO or ARCHIVE Logfile Numbers Out Of Sync ORA-312 ORA-314
(Doc ID 1108550.1)
Last updated on APRIL 06, 2022
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.4 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
During the investigation of the ALERT.LOG due to some problem you notice error messages in the ALERT.LOG regarding: ORA-00314 ; ORA-00312
Errors in file /XX/opt/oracle/admin/aaaa/bdump/aaaa_arc2_9000.trc:
ORA-00314: log 4 of thread 1, expected sequence# 35836 doesn't match 35832
ORA-00312: online log 4 thread 1: '/XX/oradata/aaaa/redolog4b.ora'
Not knowing if this was the source of the problem they contacted OSS
On further investigation it was found that this problem had been ongoing for several days and did not impact the integrity of the database
Further research show that the database opened cleanly after a normal shutdown immediate and startup
You may find that these error messages are not related to the problem you were investigating.
Reviewing the ALERT.LOG
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