Oracle Database Errors or Warnings from Error ORA-38856 to ORA-38864

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ORA-38856: cannot mark instance string (redo thread string) as enabled
Cause: The open resetlogs or standby activation operation failed because it needs to mark an instance (redo thread) as enabled. However, it had less than 2 online redo logs, which prevented it from being enabled.
Action: Add more logfiles to the specified instance and retry the command.
ORA-38857: cannot mark redo thread string as enabled
Cause: The standby switchover or failover operation failed because it needs to mark a redo thread as enabled. However, the control file was recreated with a MAXINSTANCES value smaller than the thread number of the redo thread.
Action: Recreate the control file with a larger MAXINSTANCES value.
ORA-38858: cannot mark redo thread string as enabled
Cause: The open resetlogs or standby activation operation failed because it needs to mark a redo thread as enabled. However, the control file was recreated with a MAXINSTANCES value smaller than the thread number of the redo thread.
Action: Recreate the control file with a larger MAXINSTANCES value.

ORA-38859: instance string (thread string) is not ready to be disabled
Cause: The command attempted to switch the instance (thread) into a new log before disabling it. The switch attempt failed because all eligible online logs were either being cleared or not completely archived yet.
Action: Wait a few minutes and retry.
ORA-38860: cannot FLASHBACK DATABASE during instantiation of a logical standby
Cause: The command was not permitted because the controlfile indicates the database was in the process of becoming a logical standby database but the controlfile conversion had not completed.
Action: If in the process of creating a logical standby database, perform the remaining instantiation procedures to completion. If this flashback operation followed a Data Guard failure, permit the errant Data Guard operation to successfully complete. Once the instantiation is complete, reissue the flashback operation.
ORA-38861: flashback recovery stopped before reaching recovery target
Cause: Flashback recovery on the standby ended early because the user attempted to flashback to an SCN or time for which there were no redo logs. Most likely, the user is trying to flashback to a future time in the database that the database has never recovered through. Check the alert log to find out which SCN the database recovered to.
Action: Flashback to an older SCN or acquire the necessary redo logs.

ORA-38862: FLASHBACK DATABASE in progress
Cause: The operation could not be performed while FLASHBACK DATABASE was in progress.
Action: Wait for the FLASHBACK DATABASE to complete.
ORA-38863: datafile string has been restored from an optimized RMAN backup.
Cause: Flashback Database could not flash back the file because it was restored from an RMAN optimized backup with deallocated objects. Flashback cannot revert the file to a time before the last deallocation in the datafile backup.
Action: Restore the file from a backup prior to the Flashback target SCN or time and then retry the command.
ORA-38864: cannot create a guaranteed restore point with user specified SCN or time.
Cause: An SCN or timestamp was specified when creating a guaranteed restore point. This is not supported. You can only create a guaranteed restore point as of the current time.
Action: Avoid this combination of options for creating a restore point.

Above are list of Oracle Database Errors or Warnings from Error ORA-38856 to ORA-38864 received while performing certain operation against Oracle Database or related products.

What are atOracle Database Error Messages?

Oracle Error Messages may be returned while using products which are part of Oracle Database. Each Oracle Dabase Error or Warning Message mentioned above contains the Warning or Error Message Statement, a short explanation of the probable causes of the Error message, and a recommended action.

Hope this was helpful.

Thanks,
SQLServerF1 Team
Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.

 

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