Обсуждение: cleanup of pg_temp schemas

Hi all,

My PostgreSQL app uses temporary tables. After some time, my database shows lots of pg_temp_xxx schemas with no data
inside.I tried to do a vacuum full analyze to get rid of them, but they still persisted. 

Who takes care for removing these schemas? Can I safely ignore them, or do I have to clean them up periodically? How
shouldthis be done preferably? 

Any help would very much be appreciated.

Regards
--Marcel

"Marcel Gsteiger" <Marcel.Gsteiger@milprog.ch> writes:
> My PostgreSQL app uses temporary tables. After some time, my database shows lots of pg_temp_xxx schemas with no data
inside.I tried to do a vacuum full analyze to get rid of them, but they still persisted. 

Ignore them.

            regards, tom lane

On Wed, Jan 26, 2005 at 02:28:46PM +0100, Marcel Gsteiger wrote:
> Hi all,
>
> My PostgreSQL app uses temporary tables. After some time, my database
> shows lots of pg_temp_xxx schemas with no data inside. I tried to do
> a vacuum full analyze to get rid of them, but they still persisted.

In general there will be up to one for each possible connection. So if
you are setup for 50 simultaneous connection, you could have up to 50
pg_temp_xxx schemas.

> Who takes care for removing these schemas? Can I safely ignore them,
> or do I have to clean them up periodically? How should this be done
> preferably?

Why remove them? Next time somebody creates a temp table it gets
created again. They get emptied so it's not like they take up space...

Hope this helps,
--
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a
> tool for doing 5% of the work and then sitting around waiting for someone
> else to do the other 95% so you can sue them.