ORA-00391: All threads must switch to new log format at the same time

Cause: An attempt to switch the current log of a single thread is not allowed because the compatiblity requirements force a new log format version number. When changing log formats, all threads must switch to the new format at the same time.

Action: Open the database to cause the coordinated log switch. If that is not possible then return to the same software version and compatibility setting last used to open the database.

Error Type: ORA

• Additional information for ORA-00391: All threads must switch to new log format at the same time00391
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