If the Oracle instance to which Mirror Replication Agent is connected fails for any reason, Mirror Replication Agent attempts to reconnect to any surviving instance, choosing from the list of instances defined in the tnsnames.ora file entry Mirror Replication Agent is configured to use. No manual intervention or configuration is required. If none of the instances are available, Mirror Replication Agent reports an error and continues processing as long as mirrored redo log file information is still available.
