Tom... this is getting even more weird:
logs=> select distinct confid from timelog199911;
pqReadData() -- backend closed the channel unexpectedly.
[...]
Now this:
logs=> \copy timelog199911 to timelog199911
Successfully copied.
logs=> drop table timelog199911;
DROP
logs=> CREATE TABLE "timelog199911" ( "loginname" text, "site" character varying(16), "start_time"
datetime, "elapsed" timespan, "port" text, "valid" bool, "ipaddress" inet, "confid" int4,
"session_id" text);
[...]
CREATE
logs=> CREATE INDEX "timelog199911_loginname_idx" on "timelog199911" using
btree ( "loginname" "text_ops" );
CREATE
logs=> \copy timelog199911 from timelog199911
(ok, I know it's smarted to build the index after copying in the data)
Successfully copied.
logs=> select distinct confid from timelog199911;
sbrk: grow failed, return = 12
sbrk: grow failed, return = 12
pqReadData() -- backend closed the channel unexpectedly.
[...]
logs=> select confid from timelog199911;
[...]
(208749 rows)
Weird!
Daniel
>>>Tom Lane said:> Daniel Kalchev <daniel@digsys.bg> writes:> > I have this problem with PostgreSQL 6.5.2:> > > logs=>
selectdistinct confid > > logs-> from timelog199910> > logs-> where> > logs-> confid IS NOT NULL;> > pqReadData() --
backendclosed the channel unexpectedly.> > > The logged message in stderr (of postmaster) is > > FATAL 1: Memory
exhaustedin AllocSetAlloc()> > Odd. I can't replicate this here. (I'm using 6.5.3, but I doubt that> matters.) There
mustbe some factor involved that you haven't told us.> You don't have any triggers or rules on the table, do you?> >
Hasanyone else seen anything like this?> > regards, tom lane