How do you set autocommit off in psql 8.4 at a global level? is there a configuration attribute that i can change that will introduce this behaviour for all dbs on a cluster
Simply add the following to ~/.psqlrc:
~/.psqlrc
\set AUTOCOMMIT off
Note that this only works when using the psql shell! I assume this is what you are talking about?
psql
Use a transaction if you want want a (open) transaction:
BEGIN; INSERT ...; UPDATE ...; COMMIT; -- when you're done