Do not know much about Oracle DBA.
He has a policy for the bank online (rman) and appears this errorORA-00230:
Are backups normally successful and this is a once-off or intermittent problem?
Please see this discussion on Oracle forum: https://forums.oracle.com/forums/thread.jspa?threadID=884779&tstart=0
Problem seems to be with overlapping backups.
sounds like you have a controlfile backup that is already running. See technote for more possible solution
If you cannot get it resolved I think you can shutdown immediate and startup the oracle instance.
I hope this help.
i need more information about you client (OS version, Hardware CPU bit, Oracle Version).
call your DBA, this an oracle problem in control file.
Also, create a dbclient log file and post the log.