what is: idle in transaction

Hi,

I have an app originally written to use mysql and I've switched to
postgresql as I want to use commit/rollback ... and in my tests all
is working well.

I've got a bunch of these when I run ps ax (about same amount of
both about 7/8 instances):

> postgres: admin igo [local] idle
> postgres: admin igo [local] idle in transaction

and I don't know why. I did some searching in the archives but I
didn't find anything. Could someone point me to the documentation
that speaks of this? I'm using RH 6.2 with psql (PostgreSQL) 7.1

Thanks,

Peter

---------------------------
"Reality is that which, when you stop believing in it, doesn't go
away".
-- Philip K. Dick