Oracle Solution for Error ora-19906

ORA-19906: recovery target incarnation changed during recovery

What triggered the Error:

ile a media recovery was active, a new incarnation was detected by the server due to inspection or cataloging of archived logs or backup files.

What should we do to fix it:

you want recovery to use the new incarnation, restart recovery. This is the most common action on a standby database when RESETLOGS is done in primary. If you do not want recovery to use the new incarnation, change the recovery destination using RMAN's RESET DATABASE TO INCARNATION command. To see which incarnations are available for this target database, query V$DATABASE_INCARNATION or use RMAN's LIST INCARNATION command.

If this was not sufficient go over to: Oracle Official Support Knowledge Center
Or maybe those geeks at: StackOverflow Board