Accessing Mirrored Data

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Accessing Mirrored Data

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Chris Howarth-536003

Posted Wednesday, May 13, 2009 12:27 AM

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Comments posted to this topic are about the item Accessing Mirrored Data

Post #715690

Robert Davis

Posted Wednesday, May 13, 2009 9:55 AM

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The statement that "snapshots generally take seconds to drop and create" is accurate. The key is generally. There are cases where creating a snapshot can take a very long time. You need to make sure that if you schedule automatic snapshot creation, it isn't done while there are long running processes, such as a large index rebuild, in mid-execution. Any open transactions in the database get "rolled back" in the snapshot as part of the creation.

You can read more about that here: Database snapshots can take a long time to create

My blog: SQL Soldier
Twitter: @SQLSoldier
Microsoft Certified Master: SQL Server 2008
Sr. Product Consultant and Chief SQL Server Evangelist @ Idera
My book: Pro SQL Server 2008 Mirroring

Post #716144

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