Oracle® Database 11g / 12c / 18c error codes ORA-00323: Current log of thread [string] not useable and all others need archiving

ORA-00323: Current log of thread [string] not useable and all others need archiving

Oracle Error Code: ORA-00323

Cause: Attempt to open thread failed because it is necessary to switch redo generation to another online log, but all the other logs need to be archived before they can be used.

Action: Archive the logs for the thread then retry open.