Database Error Messages

Release
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  • 23ai
  • 21c
  • 19c
Updated
Jun 24, 2024

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.