Oracle® Database 11g / 12c / 18c error codes ORA-00350: log [string] of instance [string] (thread [string]) needs to be archived

ORA-00350: log [string] of instance [string] (thread [string]) needs to be archived

Oracle Error Code: ORA-00350

Cause: The command cannot be done because the log has not been archived, and media recovery has been enabled.

Action: Archive the log or disable media recovery. If the command supports an UNARCHIVED option then it can be used. However this may result in making backups unuseable, and forcing the drop of some offline files.