Re: Possible limit on transaction size?

bbeyer@purdue.edu writes:
> About 150 million records into the import process, I get the following error:

> ERROR: lock AccessShareLock on object 51533/51769/0 is already held

What PG version?  Can you put together a self-contained test case?
(It's probably independent of the data, so you could make a script that
just processes a lot of dummy data the same way you are doing.)

There was a similar report a couple of weeks ago:
http://archives.postgresql.org/pgsql-bugs/2008-08/msg00264.php
http://archives.postgresql.org/pgsql-bugs/2008-09/msg00021.php
but that person hasn't gotten back to us on determining exactly
what happened.

            regards, tom lane