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What SCN is used for a point in time recover from a delayed standby?

edited Sep 9, 2013 4:52AM in Database Backup and Recovery (MOSC) 3 commentsAnswered
When doing a point in time duplicate from a backup of a standby database, whose time is used:  the primary's time or the standby's time?

Scenerio:
Current time is 14:00:00 CDT, so the primary database time is 14:00:00 CDT.
The standby database is always delayed 30 minutes because of WAN performance, so it has only applied transactions through 13:30:00 CDT.
A backup of the standby is taken at 00:00:00 CDT and archive logs are backed up every 15 minutes using rman.

An rman duplicate is done to create another database from the standby's backup to a point in time of 13:00:00 CDT.  Because the standby is always delayed 30 minutes would the duplicate database be recovered to the SCN that was on the primary at 13:00:00 or the SCN that was at the standby at 13:00:00?

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