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DBCC CHECKDB weird issue

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hi folks:

 I have a SCCM database and it contains corruption. The best way is to restore to the last known good backup but we have

to fix the db this time. 

 What I did is to convert db into single mode and use REPAIR_REBUILD to fix

alter database abc set single_user with rollback immediate...

dbcc checkdb ('abc', REPAIR_REBUILD)

however, after I've converted db into single mode and it ran with success. I opened another session in studio and

check sp_who to make sure but find a few sessions which are still connecting to this db. 

what's more, these sp are all lower session (process < 50) , therefore, I can not kill these spid. 

and they are all from TASK MANAGER. 

This prevents me from executing dbcc checkdb as I can not get exclusive access to this db.. 

Any comments on why those system process connected to this db after singler_user mode is on? 

thanks

Hui


--Currently using Reporting Service 2000; Visual Studio .NET 2003; Visual Source Safe SSIS 2008 SSAS 2008, SVN --


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