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SQL Server 2005
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Data Corruption
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806 trace flag
806 trace flag
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abishekshroff
abishekshroff
Posted Friday, December 11, 2009 9:35 PM
SSC-Enthusiastic
Group: General Forum Members
Last Login: 2 days ago @ 1:57 PM
Points: 164,
Visits: 252
what is the good,bad and ugly part of 806 trace flag?Will the database performance be slow if i enable in my production
Post #833274
GilaMonster
GilaMonster
Posted Saturday, December 12, 2009 2:01 AM
SSChampion
Group: General Forum Members
Last Login: Today @ 11:06 AM
Points: 17,125,
Visits: 12,226
Why are you considering enabling traceflag 806? On whose advice with what reason? What do you think it does?
Gail Shaw
We walk in the dark places no others will enter
We stand on the bridge and none may pass
Post #833303
abishekshroff
abishekshroff
Posted Saturday, December 12, 2009 5:01 AM
SSC-Enthusiastic
Group: General Forum Members
Last Login: 2 days ago @ 1:57 PM
Points: 164,
Visits: 252
there is database corruption. the IO system is robust
Post #833319
Paul Randal
Paul Randal
Posted Saturday, December 12, 2009 7:55 AM
SSCommitted
Group: General Forum Members
Last Login: Today @ 12:15 PM
Points: 1,526,
Visits: 1,209
You don't want to turn it on unless you're *not* covered by page checksums already. It's going to vastly slow down reads while it does the extra auditing.
No problem if you want to turn it on, I've discussed this trace flag publicly in sessions at TechEd in 2007, just don't leave it on permanently.
Paul Randal
CEO,
SQLskills.com
- Need a database maintenance/ops/HA/DR audit? Send me email!
Blog:
www.SQLskills.com/blogs/paul
Twitter:
@PaulRandal
SQL MVP, Microsoft RD, Contributing Editor of
TechNet Magazine
and
SQL Server Magazine
Author of DBCC CHECKDB/repair (and other Storage Engine) code of SQL Server 2005
Post #833327
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