ORA-16076: unknownstandby database destination Cause: A standby database destination was specified that wasnot accessed by
another instance. If the initialization parameter LOG_ARCHIVE_CONFIG does
not define a DG_CONFIG, this mismatch may be due to a standby database
having been restarted recently. Action: Ensurethat at each instance the set of standby databases referred to by
LOG_ARCHIVE_DEST_n initialization parameters is the same and define a DG_
CONFIG at each instance to identify those databases explicitly.