IpcMemoryCreate: shmget failed (Invalid argument)

I get this error when trying to start postgres with a block size > the
default of 64...

[postgres(at)roam pgsql]$ /usr/local/pgsql/bin/postmaster -B 2000 -D
/usr/local/pgsql/data
IpcMemoryCreate: shmget failed (Invalid argument) key=5432001,
size=33652736, permission=600
This type of error is usually caused by an improper
shared memory or System V IPC semaphore configuration.
For more information, see the FAQ and platform-specific
FAQ's in the source directory pgsql/doc or on our
web site at http://www.postgresql.org.
FATAL 1: ShmemCreate: cannot create region

I am running PG 7.03, and I assume that you'll want to need to know my
OS...

[postgres(at)roam pgsql]$ uname -a
Linux roam 2.2.14-5.0 #1 Tue Mar 7 21:07:39 EST 2000 i686 unknown

(RedHat 6.2)

Thanks.

- JT
________________________________________
James Thornton, http://jamesthornton.com