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How to change SQL Server Collation


How to change SQL Server Collation

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sunilreddy
sunilreddy
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I got the same problem...
The better way is to reinstall again and change the collation during the installation itself....

sunilreddy
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mosaic-287947
mosaic-287947
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For a single database this codeproject solution (updated for SQL 2005) may still be worth a look:

http://www.codeproject.com/KB/database/ChangeCollation.aspx
dlangschied
dlangschied
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I tried this solution to change my collation from Latin1_General_CI_AS to SQL_Latin1_General_CP1_CI_AS and it did not work. I did not get any errors, but it did not work nonetheless. Please advise.
dlangschied
dlangschied
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To be precise, the solution of running the start ... settup.exe .. SQLCOLLATION=SQL_Latin1_General_CP1_CI_AS to rebuild the instance.
wgregalu
wgregalu
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I had a SQL Server 2005 installation where the server was defined with Latin1_General_CI_AI and databases defined with SQL_Latin1_General_CP1_CI_AS (I didn't install it and don't know how it got that way). The client was receiving the "Cannot resolve the collation conflict between" error while accessing their application.

I detached the databases defined with the correct collation, shutdown SQL Server and associated services, ran

sqlservr -m -T4022 -T3659 -q"SQL_Latin1_General_CP1_CI_AS"

restarted the server and associated services, reattached the databases, and everything worked perfectly!

Startup option -m forces single user mode.
Trace flag 3659 allows logging all errors to SQL Server logs.
Trace flag 4022 forces SQL Server to skip startup stored procedures (if you have any).
Startup option -q rebuilds all databases and contained objects into the specified collation, without reinstalling the instance.

Per link: http://spaghettidba.com/tag/trace-flags/
Jamie Gaffney
Jamie Gaffney
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Old thread I too have been having problems with this in the future...
It Seems to run and not show any error messages...

Command i am running: Setup /ACTION=REBUILDDATABASE /INSTANCENAME=MSSQLSERVER /SQLSYSADMINACCOUNTS=ecljagaf /sapwd=Password /SQLCOLLATION=SQL_Latin1_General_CP1_CI_AS

I am running this from this directory: C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Release

I have also tried mounting the drive and running the command from there.

any help would be appreciated.
Solomon Rutzky
Solomon Rutzky
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What does the "sqlservr.exe -q" option do?

Short answer:

It changes the Collation at all levels: Instance, all Database's, and all string columns in all User Tables. It does this, and avoids all of the typical restrictions, by simply updating the meta-data of the tables, etc to have the new Collation. It then drops and recreates all indexes that have string columns. There are also a few nuances to this method that might have impact, but are fixable.

Long answer:

I have documented all of the behaviors, including listing all of the potentially affected areas by doing such a wide-sweeping Collation change, in the following post:

Changing the Collation of the Instance, the Databases, and All Columns in All User Databases: What Could Possibly Go Wrong?


Warning:

This option is undocumented (well, not "officially" documented), meaning: unsupported (use at your own risk ; it might work perfectly, but if it doesn't, Microsoft isn't going to help or be liable)

Take care, Solomon..


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