[dba-SQLServer] From a reader

What I think he is missing is that any data that was added/changed to DB1 from the last log backup before the Monday night full backup of DB1 to the beginning of the 1st log backup of DB1 after the full backup Monday night will be missing, and the somehow SQL Server knows this and that is why it won't allow that 'after full backup log' to be restored.

 

Does that help any?

Nancy Lytle 
N_Lytle at terpalum.umd.edu











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> From: ssharkins at gmail.com
> To: dba-SQLServer at databaseadvisors.com
> Date: Thu, 2 Apr 2009 12:17:56 -0400
> Subject: [dba-SQLServer] From a reader
> 
> Without drawing a diagram, he loses me in para 2. Any help?
> 
> Susan H.
> 
> 
> Could you be kind enough to clarify a BIG question I have about Transaction 
> Log application? If I have a database in full recovery model (DB1) and I do 
> a full backup I can then restore this backup on a different server 
> (DB1_copy) and apply the transaction log backups from DB1 to DB1_copy. I 
> should have no problem and my tests confirm this.
> 
> 
> 
> But let's say I take a full backup of DB1 on Sunday. T-log backups of DB1 
> continue on an hourly basis. Monday morning, I restore DB1 on a different 
> server as DB1_copy with NORECOVERY and start applying all T-log backups WITH 
> NORECOVERY to DB1_copy that have been taken from DB1. Monday night, I take a 
> full backup of DB1 but don't restore it to DB1_copy, instead I apply (or try 
> to apply) the subsequent T-log backups of DB1 since Monday's full backup to 
> DB1_copy. Based on my tests this doesn't work. Below is the SQL Server 
> message. Does every full backup reset something internally ?
> 
> 
> 
> Thanks
> 
> 
> 
> David Agnew
> 
> 305.905.6312
> 
> 
> 
> SQL Server message.
> 
> Server: Msg 4326, Level 16, State 1, Line 1
> 
> The log in this backup set terminates at LSN 21000000025000001, which is too 
> early to apply to the database. A more recent log backup that includes LSN 
> 21000000040500001 can be restored.
> 
> Server: Msg 3013, Level 16, State 1, Line 1
> 
> RESTORE LOG is terminating abnormally.
> 
> 
> 
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