Cause: While a media recovery was active, a new incarnation was detected by the server due to inspection or cataloging of archived logs or backup files. See the solution below.

Error solution: If 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 <incarnation#> command. To see which incarnations are available for this target database, query V$DATABASE_INCARNATION or use RMAN's LIST INCARNATION command.