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Update in the order of Clustering Index, reduces CPU Time?

 
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rathinakarthik

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Joined: 25 Jul 2006
Posts: 24

PostPosted: Wed Mar 14, 2007 5:54 pm    Post subject: Update in the order of Clustering Index, reduces CPU Time?
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Hi,

We are having performance issues in our DB2 modules. We found that updation of columns of in a table is taking much CPU time. Currently the columns are updated in random fashion.
If the columns are updated in Clustering index order , whether the CPU time will be reduced?

Please advise

Thank you.
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kgumraj

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Joined: 01 May 2006
Posts: 151
Location: Hyderabad

PostPosted: Wed Mar 14, 2007 6:33 pm    Post subject: Re: Update in the oreder of Clustering Index
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Hi,

You have the answer in your question. You are true CPU time will improve when you use clustering index.
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vini_srcna

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Joined: 26 May 2005
Posts: 178
Location: Copenhagen, Denmark

PostPosted: Wed Mar 14, 2007 9:15 pm    Post subject:
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Quote:
If the columns are updated in Clustering index order , whether the CPU time will be reduced?


Obviously yes. It takes less time when you go for sequential access.
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ashok_uddaraju

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Joined: 21 Feb 2007
Posts: 72
Location: bangalore

PostPosted: Wed May 16, 2007 9:18 am    Post subject: Re: Update in the oreder of Clustering Index
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hi,
The main purpose of clustering index is to reduce CPU time
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