ORA-16075: standby database destination mismatch

admin

ORA-16075: standbydatabase destination mismatch
Cause: Another instance had access to a standby databasedestination that this
instance did not. If the initialization parameter LOG_ARCHIVE_CONFIG does
not define a DG_CONFIG, this may be due to a standby database becoming
unavailable 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.