June 6, 2014 at 8:55 am
Hi All ,
I am using MS SQL Server 2005 as my database. Previously I have some issues with my table indexes and the retrieval of my select is abit slow. If I drop and re-create the indexes, the select statement is fast.
Thus I have scheduled a job to drop and re-create my index weekly but it doesn't to work well. After 4 days, the select statement is slow again and I have to drop and re-create.
Anyone encountered this issue before and any solution is appreciated.
Thank You.
June 6, 2014 at 9:16 am
snowfrost.c (6/6/2014)
Hi All ,I am using MS SQL Server 2005 as my database. Previously I have some issues with my table indexes and the retrieval of my select is abit slow. If I drop and re-create the indexes, the select statement is fast.
Thus I have scheduled a job to drop and re-create my index weekly but it doesn't to work well. After 4 days, the select statement is slow again and I have to drop and re-create.
Anyone encountered this issue before and any solution is appreciated.
Thank You.
You drop and recreate your indexes weekly??? Have you checked the fragmentation? You should read this article. http://ola.hallengren.com/sql-server-index-and-statistics-maintenance.html
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June 6, 2014 at 10:13 am
Yep, definitely shouldn't be dropping and recreating the index each week. Using Ola's excellent maintenance plan to do REBUILD or REORGANIZE is definitely a better choice, and the root of the problem seems to be stale statistics, from a hazarded guess.
If the index is doing well after the creation and is degrading afterwards, the statistics are more than likely no longer good. Tossing in an UPDATE STATISTICS as needed should help to remedy that. From the sound of the problem, there's a good bit of data modification going on that needs to be accounted for.
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