tunning an index build
- From: genegurevich@xxxxxxxxxxxx
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 17 Jul 2007 18:50:26 -0500
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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