how to confirm Real Time Apply working on 10.2.0.4
SQL> ALTER DATABASE recover managed standby database using current logfile disconnect;
Database altered.
SQL> SELECT DEST_ID, RECOVERY_MODE FROM V$ARCHIVE_DEST_STATUS;
DEST_ID RECOVERY_MODE
---------- -----------------------
1 MANAGED REAL TIME APPLY
2 MANAGED REAL TIME APPLY
3 MANAGED REAL TIME APPLY
4 MANAGED REAL TIME APPLY
5 MANAGED REAL TIME APPLY
6 MANAGED REAL TIME APPLY
7 MANAGED REAL TIME APPLY