[PERFORM] choosing fillfactor

2007-05-18 Thread Gene Hart
I've tried searching the documentation to answer this question but could not find anything. When trying to choose the optimal fillfactor for an index, what is important the number of times the row is updated or the column indexed upon is updated? In my case each row is updated on average about

Re: [PERFORM] [JDBC] does prepareThreshold work? forced to use old driver

2007-02-26 Thread Gene
Thank you! setting the protocolVersion=2 works with the newer driver. I'm still puzzled as to why the prepareThreshold=0 doesn't force the replan though. On 2/26/07, Dave Cramer <[EMAIL PROTECTED]> wrote: On 26-Feb-07, at 11:12 AM, Gene wrote: > hi! > > I&#x

[PERFORM] does prepareThreshold work? forced to use old driver

2007-02-26 Thread Gene
hi! I've been having some serious performance issues with postgresql8.2/hibernate/jdbc due to postgres reusing bad cached query plans. It doesn't look at the parameter values and therefore does not use any partial indexes. After trying to set prepareThreshold=0 in the connection string which did

Re: [PERFORM] Areca 1260 Performance

2006-12-07 Thread Gene
arate partitions/tablespaces for the two large tables and indexes? Thanks Gene On 12/7/06, Shane Ambler <[EMAIL PROTECTED]> wrote: >> One thing that is clear from what you've posted thus far is that you >> are going to needmore HDs if you want to have any chance of fully >

Re: [PERFORM] Slow functional indexes?

2006-11-05 Thread Gene
-nomail command to [EMAIL PROTECTED] so that your   message can get through to the mailing list cleanly -- Gene Hartcell: 443-604-2679

[PERFORM] Update INSERT RULE while running for Partitioning

2006-07-07 Thread Gene
ill the transaction prevent that from occurring? I've done some testing and it seems to work but I could just get lucky so far and not lose any data :) Thanks for any help,Gene

Re: [PERFORM] optimizing LIKE '%2345' queries

2006-07-04 Thread Gene
Thanks for the suggestion. Actually I went ahead and created a reverse function using plpgsql, created an index using reverse column and now my queries use "where reverse(column) like reverse('%2345') and it's using the index like i hoped it would! Now if I could figure out how to optimize like '

[PERFORM] optimizing LIKE '%2345' queries

2006-07-02 Thread Gene
Is there any way to create a reverse index on string columns so that queries of the form: where column like '%2345'; can use an index and perform as fast as searching with like '2345%'? Is the only way to create a reverse function and create an index using the reverse function and modify querie