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 Reindex and update stats
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Posting Yak Master

100 Posts

Posted - 10/12/2006 :  10:09:47  Show Profile  Reply with Quote
I've acquired a server that is running Reindex and update stats
every night.

This seems excessive.. can this actually hurt performance?

Flowing Fount of Yak Knowledge

5581 Posts

Posted - 10/12/2006 :  10:14:37  Show Profile  Visit harsh_athalye's Homepage  Click to see harsh_athalye's MSN Messenger address  Send harsh_athalye a Yahoo! Message  Reply with Quote
Why do you need to reindex and update stats every night? Is your database go through heavy volume of changes everyday?

I think these operations are more appropriate to do on weekly basis.

Harsh Athalye
"Nothing is Impossible"
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United Kingdom
12543 Posts

Posted - 10/12/2006 :  10:16:25  Show Profile  Visit nr's Homepage  Reply with Quote
It'll hurt performance while it's running but shouldn't otherwise.
It may cause an execution plan to change for the worse but that would probably happen eventually anyway.

Cursors are useful if you don't know sql.
DTS can be used in a similar way.
Beer is not cold and it isn't fizzy.
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Posting Yak Master

100 Posts

Posted - 10/12/2006 :  11:16:34  Show Profile  Reply with Quote
thanks much
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Almighty SQL Goddess

38200 Posts

Posted - 10/12/2006 :  15:05:08  Show Profile  Visit tkizer's Homepage  Reply with Quote

Tara Kizer
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United Kingdom
22859 Posts

Posted - 10/13/2006 :  05:47:09  Show Profile  Reply with Quote
"I think these operations are more appropriate to do on weekly basis."

I don't agree - if you have a quiet slot overnight why way a further 6 days, potentially, before you reinstate decent performance?

Having said that we use DEFRAG and only on tables that show as sufficiently fragmented to warrant it.

But we do update stats on all tables every night.

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