Jim Nasby <decibel@xxxxxxxxxxx> writes: > I'm guessing the issue here is shmall, which I believe is limiting > you to 4MB of shared memory. Is there *anything* using shared memory > in the ipcs report? Right, it looks like shmall is the problem. I believe BTW that you need to do "sudo ipcs -a" to be sure of seeing everything; otherwise OS X's ipcs silently doesn't tell you about segments your userid doesn't have access to. regards, tom lane