Archive apply to standby

Question

Hai all,
I confihgured physical standby and it is working fine.. but before making a switch over, oracle recommends to run this query inorder to Make sure the standby database is current with redo application. On each database server, run this query to see the which logs have been sent / received and applied
select sequence#, applied,
to_char(first_time, ‘mm/dd/yy hh24:mi:ss’) first
from v$archived_log
order by first_time;
Now when I execute this query,
SEQUENCE# APP FIRST
6508 NO 07/16/08 00:49:17
6508 YES 07/16/08 00:49:17
6509 NO 07/16/08 00:55:54
6509 YES 07/16/08 00:55:54
What does this indicate ?..
Is this applied successfully to the standby site ?
Thanks
Kai

Answer 1

You know,
I like to run the following query to tell me where my standby is at:
select * from V$dataguard_stats
NAME                    VALUE                    UNIT TIME_COMPUTED
apply finish time     +00 00:00:00.2      day(2) to second(1) interval 16-JUL-2008 14:05:49
apply lag               +00 00:00:19          day(2) to second(0) interval 16-JUL-2008 14:05:49
estimated startup time          36               second     16-JUL-2008 14:05:49
standby has been open          N                         16-JUL-2008 14:05:49
transport lag               +00 00:00:04     day(2) to second(0) interval 16-JUL-2008 14:05:49
This gives you a good indication of upto what archived log you have applied.
jason.
http://jarneil.wordpress.com