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bad Windows login when connect to SQL


bad Windows login when connect to SQL

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kevaburg
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schleep (7/9/2013)
Had a similar problem some months ago with renamed Windows accounts.
http://www.sqlservercentral.com/Forums/Topic1328455-1550-3.aspx#bm1352733
After banging our heads against the proverbial wall for a week, we stumbled upon the solution: re-boot the SQL Server.


Might I suggest then that the cache that OPC was talking about is in TempDB? It would make some sense.....
tutupouet
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I checked in tempdb and saw nothing special: (
I checked the CREATE VIEW [system]. [Server_principals_new] but it uses system tables that are not queryable as master.sys.sysxlgns, sys.syspalnames... !

For the reboot, it's not so easy in production Smile
schleep
schleep
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I know. It was frustrating, since we had to schedule our AD changes around the 15 minute nightly window for re-booting. Even more frustrating as it was only the primary prod box that required the re-boot. Most of the other SQL servers did not show this behaviour.



Orlando Colamatteo
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You can select from those system tables only when logged in using the DAC.

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tutupouet
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I done some tests on a dev environnement and in the master.sys.sysxlgns there is only logins that are defined on the server, I dont see logins that are connected via a group !!
Orlando Colamatteo
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Finding them in one of the tables referenced by sys.server_principals was just a hunch. They could be somewhere else too. Have you tried adding the Login and then dropping it to see if that changes things?

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tutupouet
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no, I don't tried create/drop login because now the problem is solved
I do not know how, I just deleted and created some other logins and it seems that synchronization is done!

but I want to find a solution for the next time :-)

I will see if I can do some other tests to try your workaround
Orlando Colamatteo
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chauchs (7/9/2013)
no, I don't tried create/drop login because now the problem is solved
I do not know how, I just deleted and created some other logins and it seems that synchronization is done!

I am speculating because none of this seems to be documented, but adding any new Login may have prompted SQL Server to re-resolve group-member SIDs to names the next time they are used so you may have indirectly and inadvertently solved the problem by adding a new Login.

but I want to find a solution for the next time :-)

If you happen to isolate it, please post back. I, am I'm sure others as well, could benefit from the information.

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tutupouet
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Is there a way to edit the system functions?

As the system procedures in the database mssqlsystemresource, because I can see them but can't generate script !!
I would like to know where the functions (like SUSER_SID, SUSER_SNAME ...) get information.
Orlando Colamatteo
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chauchs (7/9/2013)
Is there a way to edit the system functions?

Nope. The ability to mess with system objects was taken away in SQL 2005 because people were modifying the system in unsupported ways, getting wrong behavior, and then calling Microsoft in to help them fix their system. That's when the System/Catalog Views and DMOs were introduced.

As the system procedures in the database mssqlsystemresource, because I can see them but can't generate script !!
I would like to know where the functions (like SUSER_SID, SUSER_SNAME ...) get information.

That stuff is likely buried in a DLL compiled from C++ code, so no again.

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