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Database inconsistency issues

Posted on 2014-02-14
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Last Modified: 2014-02-19
Hi,

When I run DBCC CHECKDB, I get a severe error.

When I run DBCC CHECKCATALOG, I get database inconsistency errors.

I googled and came across the following solution:
1. Start instance  in single user mode.
2. Connect with DAC
3. sp_configure allow update on
4. edit sys.columns manually

My question is - how do I go about editing sys.columns manually? What are the steps, the SQL statements involved, etc.?

Thanks.
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Question by:zeekay22
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by:ScottPletcher
ScottPletcher earned 150 total points
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You can't directly update the systems table in SQL 2008, so that's not really a solution.

How to recover from db error(s) depends on the specific db in which the error occurred, the specific error(s), whether or not you have a clean backup and other factors.  So, unfortunately, without further details, I can't provide any more help on how to recover.
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by:zeekay22
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This is SQL Server 2008R2 Express Edition.

There are no clean backups available.

The errors have been delineated in the question above.
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Anthony Perkins earned 350 total points
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Then unfortunately, the best you can do is something like this (but do a backup first):
ALTER DATABASE YourDatabase SET SINGLE_USER WITH NO_WAIT
GO
DBCC CHECKDB (YourDatabase, REPAIR_ALLOW_DATA_LOSS)
GO
ALTER DATABASE YourDatabase SET MULTI_USER WITH NO_WAIT
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by:zeekay22
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Ended up having to do a db to db copy.
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by:Anthony Perkins
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I am sorry you did not like the answer.  Unfortunately given the circumstances the question was complicated to say the least.

The best part of this is that you have now learned the importance of backups.
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