Re: tunning an index build
- From: "Niall Litchfield" <niall.litchfield@xxxxxxxxx>
- To: genegurevich@xxxxxxxxxxxx
- Date: Wed, 18 Jul 2007 11:40:36 +0100
what happens if you try and do this without parallelisation - or with a
lower degree?
On 7/18/07, genegurevich@xxxxxxxxxxxx <genegurevich@xxxxxxxxxxxx> wrote:
Hi all:
I think I have posted on this issue before, but I can't find my old Emails
so - sorry for the repeated question.
Here is the situation. I am running oracle 9208 and have a 40G table with
a lot of indices - mostly bitmap
Their sizes are under 1G. These indices take about 20 to 30 minutes to
build. That seems to be too long.
I have just waited for 24 minutes to build a 82M index. The index is
parallelized 4 way, the table is
parallelized 6 ways. I have 2G sga and 1.5G pga. I do see a lot of IO
waits
(via vmstat) and I have UNIX
team looking into that. I think I have plenty of memory and the
parallelizm
should be enough for a small index.
Any thoughts on what else I should look at?
thank you
Gene Gurevich
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Niall Litchfield
Oracle DBA
http://www.orawin.info
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