standby database receive sequence from primary database (version 11.2.0.4.0) but not applied in standby database.
for resolving this gap between primary and standby we performed below activities-
1. check the current scn from standby.
select current_scn from v$database;
2. shut down standby db
3. from primary , incremental backup from standby current scn. and current control file.
4. restore in standby db.
after following above steps, archive log still not filled.