Hello all,
I have a problem with growing WAL-files populating a temporary table.
After running the following script 8192 times (each in separate connection) I can see 3*16 MB WAL files.
CREATE TEMP TABLE IF NOT EXISTS positiontemporarytable (pos_instrument_id integer, pos_code varchar(40));
BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE;
prepare pos_insert (integer, varchar(40)) as insert into "positiontemporarytable" values($1, $2);
execute pos_insert ('76','27958');
execute pos_insert ('71','9406:58');
......
<about 8000 same 'executes' commands>
......
execute pos_insert ('74','19406:58');
COMMIT;
It was tested via pgbench:
pgbench -l -t 8192 -C -f /db/postgres/report_test.sql db_test
and simple bash script:
for i in {1..8192}
do
echo $i
psql -f /db/postgres/report_test.sql db_test
done
As metioned, for example, in Robert Haas blog
3. They are not WAL-logged.
Whats wrong with it in my case?
--
Regards, Andrey Lizenko
