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Delete Huge Records From Huge Partition TableSpace.

 
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Manshadi

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Joined: 31 Aug 2005
Posts: 82

PostPosted: Sun Jun 20, 2010 1:13 pm    Post subject: Delete Huge Records From Huge Partition TableSpace.
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Hi,

I am looking for best way for deleting huge records from in one of our large On-line partition table-space.

Please advise. and let me know your experience.

Another question is this delete effected on number of leaf-page please explain why?

Regards
Manshadi
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dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Sun Jun 20, 2010 8:36 pm    Post subject:
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Hello,

You need to provide much more detail about what you need to do and your concern(s).

What is "huge" to you?

Why do you believe you need to be concerned with leaf pages?

What does your dba suggest?
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Manshadi

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Joined: 31 Aug 2005
Posts: 82

PostPosted: Mon Jun 21, 2010 3:46 pm    Post subject:
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Hi,

To me, huge is deleting 500,000,000 records on our on-line partition table space with 1,500,000,000 records.

About leaf page I checked and deleted 10,000,000 records in our test system after reorg and runstat utility, I found that the leaf pages are increase.

I am DBA and looking for the other DBAs suggestion.

Hope this helps,
Manshadi
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sushanth bobby

Senior Member


Joined: 29 Jul 2008
Posts: 1013
Location: India

PostPosted: Mon Jun 21, 2010 4:27 pm    Post subject:
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Manshadi,

How often do this deletes happen ?

What are the limit keys and columns for this partition tablespace.

What your delete statement will look like ?(where clause)

Thank You,
Sushanth
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guptae

Moderator


Joined: 14 Oct 2005
Posts: 1187
Location: Bangalore,India

PostPosted: Mon Jun 21, 2010 4:28 pm    Post subject:
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Hello Manshadi,

I would suggest Reorg with discard option
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