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View Contents of a Log Backup


View Contents of a Log Backup

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tom 28327
tom 28327
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I noticed in one of my overnight scheduled log backups that it was huge 500MB for 800MB database. Usually my log backups are relatively small 30MB. I would like to view the contents of the file so that I can see what happened.

I can't seem to find a way to do this, can you tell me if there is a way to inspect the backup file to see what transactions occurred?


Thanks,

Tom
Grant Fritchey
Grant Fritchey
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I'm not aware of a tool that lets you directly read a log backup file. I'm sure there's a way to do this (for example, Red Gate has a tool that lets you read a full backup file and use it to compare data & structure to a database), but I have never seen a tool that does it. The only way I can think of to even get a good guess would be to do a restore to a point in time using the log backups you have and see what has been happening on the system that way.

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http://www.apexsql.com/sql_tools_log.aspx

ApexSQL Log

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Grant Fritchey
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Sean Pearce (8/29/2013)
http://www.apexsql.com/sql_tools_log.aspx

ApexSQL Log

Order now from $1,499 w00t





But that just reads the log. It doesn't read log backups.

Plus, you don't need a tool to read the log. There's an undocumented command, dbcc log().

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There's an undocumented command that reads the log backup too, but I doubt it will help much. Unless someone is very, very familiar with the log internals, that'll just return hundred of MB of mostly incomprehensible data.

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Jeff Moden
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tom 28327 (8/28/2013)
I noticed in one of my overnight scheduled log backups that it was huge 500MB for 800MB database. Usually my log backups are relatively small 30MB. I would like to view the contents of the file so that I can see what happened.

I can't seem to find a way to do this, can you tell me if there is a way to inspect the backup file to see what transactions occurred?


Thanks,

Tom


Was that about the same time that a Reindexing job or database backup ran, by any chance?

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
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