Standby database sync issues

Hi,

I have below output on standby database.

SQL> select max(sequence#) from v$log_history;

MAX(SEQUENCE#)
--------------
70102

SQL> select max(sequence#) from v$archived_log;

MAX(SEQUENCE#)
--------------
70663
I would like to know why there is difference of output on standby whereas on
production both have same value.

What kind of log sync are you using?. redolog based or archive log based?

It is archive log based.

Hi

Do you have standby redologs created in primary and standby servers

Hi,

Yes .We have standby redologs created in primary and standby database.
Also now both the sequence output from v$log_history and
v$archived_log are same.

Hi

Do you use realtime apply ?