ORA-12942
        database incarnation at source does not match
        
        
        Cause
        A request to send data blocks to a recovery process failed because the source of the blocks is not on the same database incarnation as the site where the recovery is being performed.
        Action
        Use standard Oracle Data Guard procedures to synchronize the primary and standby databases. Standby media recovery automatically tries to resolve many of the remaining nonlogged blocks on the standby database. To resolve any remaining nonlogged blocks, use the RMAN RECOVER ... NONLOGGED BLOCK command.
        
     
    
    
        ORA-12942
        database incarnation at source does not match
        
        
        Cause
        A request to send data blocks to a recovery process failed because the source of the blocks is not on the same database incarnation as the site where the recovery is being performed.
        Action
        Use standard Oracle Data Guard procedures to synchronize the primary and standby databases. Standby media recovery automatically tries to resolve many of the remaining nonlogged blocks on the standby database. To resolve any remaining nonlogged blocks, use the RMAN RECOVER ... NONLOGGED BLOCK command.
        
     
    
    
        ORA-12942
        database incarnation at source does not match
        
        
        Cause
        A request to send data blocks to a recovery process failed because the source of the blocks is not on the same database incarnation as the site where the recovery is being performed.
        Action
        Use standard Oracle Data Guard procedures to synchronize the primary and standby databases. Standby media recovery automatically tries to resolve many of the remaining nonlogged blocks on the standby database. To resolve any remaining nonlogged blocks, use the RMAN RECOVER ... NONLOGGED BLOCK command.