Time lag in dataguard

Hi experts...Version is 10.2.0...OS is AIX....Our AIX admins they want to upgrade their version from 5.3 to 6.1 wanted our DBA team to shutdown the Physical standby database...we did that and after all the maintanance was done we mounted the standby database...initially we had the Time lag of 30 minutes between the primary and standby....my question is how to know the time lag after the standby is up and mounted..and will the archives be applied as usually??? and what about the archives when the standby is down.....

It will be worth checking your alert logs to ensure that the logs are being shipped to the destination and then perhaps run a query such as something like this in order to check the time stamp on the latest archive log log applied.
On the Standby:
SELECT SEQUENCE#,APPLIED FROM V$ARCHIVED_LOG
ORDER BY SEQUENCE#;
(Check in line with the primary)
If the configuration was already there, then expect the log shipping to commence again once restarted. Note: While the standby is down the archive logs will remain in storage and will catch up once the database has been mounted again.
Edited by: DaleyB on 29-Apr-2011 13:08

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Hi,
You can Query from v$archive_gap :Dynamic Performance (V$) Views, 9 of 238
select * from v$archive_gap;
HTH

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Attachments:
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Time lag in dataguard

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