Slow (to none) performance on SQL 2005 after attaching SQL 2000 database

Posted by ploft on Stack Overflow See other posts from Stack Overflow or by ploft
Published on 2009-10-26T14:46:47Z Indexed on 2010/04/25 3:03 UTC
Read the original article Hit count: 377

Filed under:

sql

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sql-server

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sql-server-2000

|

sql-server-2005

|

migration

Issue: Using the detach/attach SQL database from a SQL 2000 SP4 instance to a much beefier SQL 2005 SP2 server.

Run reindex, reorganize and update statistics a couple of times, but without any success.

Queries on SQL 2000 took about 1-2 sec. to complete, now the same queries take 2-3 min on the SQL 2005 (and even 2008 - tested it there also).

Have looked at the execution plans and the overall percent matches or are alike on each server.

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