connected to target database: XXXX (DBID=2420973458)
connected to recovery catalog database
recovery catalog schema release 12.02.00.01 is newer than RMAN release
RMAN>
starting full resync of recovery catalog
RMAN-00571: ================================================
RMAN-00569: ==========ERROR MESSAGE STACK FOLLOWS ==========
RMAN-00571: ================================================
RMAN-03002: Failure of crosscheck command at 11/25/2017 19:02:46
RMAN-03014: implicit resync of recovery catalog failed
RMAN-03009: failure of full resync command on default channel at 11/25/2017 19:02:46
RMAN-20036: invalid record order
RMAN> unregister database xxxx;
database name is “DB2” and DBID is 2420973458
Do you really want to unregister the database (enter YES or NO)? yes
database unregistered from the recovery catalog
RMAN>
RMAN> register database;
database registered in recovery catalog
starting full resync of recovery catalog
full resync complete