Deleting row in 7.4 takes for ever
От | Bharat Patel |
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Тема | Deleting row in 7.4 takes for ever |
Дата | |
Msg-id | 005101c89c27$7aa1f0b0$6fe5d210$@com обсуждение исходный текст |
Ответы |
Re: Deleting row in 7.4 takes for ever
|
Список | pgsql-general |
Hello,
I’m new to postgres and the work of DB’s.
I’m running postres 7.4 on RHLinux 3.
I have a table that has 5.4 million rows of data in it. 4.6 million of these rows are just administrative messages and not necessary so I’d like to delete them. If I try and delete them, it takes 69 minutes to delete ~650K rows. The current postgres configurations are defaults in postgres.conf file. I’ve tried bumping up the shared_bufferes in the conf file, but it does not help. Also I am unable to start postgres is I change the shared_buffers to a values higher then 2000.
We have a project underway to upgrade to postgres 8.2, but that will take some time, so I’d like to delete these in 7.4 if at all possible in a reasonable amount of time so that I can minimize production impact to customers.
Any and all suggestion will be greatly appreciated.
Regards
Bharat
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