Re: Clarification reqeusted for "select * from a huge table" - Mailing list pgsql-hackers

Gokulakannan Somasundaram wrote:
>     I had a chance to test one of the real world cases with Oracle and
> PostgreSQL. Create a Table with 10 million rows (i worked on a 1GB RAM
> machine) both in oracle and Postgresql. Just write a JDBC program for
> a 'select *' on that table. With PostgreSQL as backend, java crashes
> saying that it has met 'Out Of Memory'. With Oracle it doesn't.
>     Postgres tried to send all the results back to the client at one
> shot, whereas in Oracle it works like a Cursor. Is this issue already
> well known among hackers community? If known, why is it designed this
> way?

http://jdbc.postgresql.org/documentation/head/query.html#query-with-cursor

--   Heikki Linnakangas  EnterpriseDB   http://www.enterprisedb.com