Hi Greg
Thanks for your response. Hibernate works well when I change the DB to
SQL server but somehow the moment I point to Postgresql it start
generating OutOfMemory. Is there some configuration at DB end to ensure
it starts using the cursors.
See link: http://forum.springsource.org/archive/index.php/t-23170.html
Regards
Ankit
Greg Stark wrote:
On Mon, Dec 21, 2009 at 12:54 PM, Ankit Kumar <ank...@xebia.com> wrote:
I am running a Criteria.scroll() on postgresql on a DB containing 2M
records. The memory keeps increasing and finally it generates an
OutOfMemoryException. Please can you advice how to fix this.
Postgresql DB version: 8.4
Postgresql Driver Used: postgresql-8.4-701.jdbc4.jar
Some forums do mention that "scroll" is slow on Postgresql.
Is this a known issue or we need to do something specific to make scroll
work on Postgresql?
Exception StackTrace:
java.lang.OutOfMemoryError: Java heap space
This looks like a Java error, not a Postgres one. It looks like
Hibernate is asking for the entire result set back from Postgres
instead of using a scrollable cursor and is trying to hold it all in
RAM. You should ask the Hibernate people if they plan to either spill
to disk or use database-side cursors which certainly do if necessary.
