Re: can't re-start postgresql

mjbjr@beaudesign.com writes:
> [postgres@localhost postgres]$ ipcrm shm 4224672
> shmctl : Identifier removed

> [postgres@localhost postgres]$ ipcs -m 4224672

> ((returns a ton of addr info))

The old postmaster may be gone, but what about child backends?  I don't
think the shm segment will go away as long as any process holds it open.

Another theory is that you're misinvoking either ipcrm or ipcs.  I know
the syntaxes you illustrate above don't work on my system ...

            regards, tom lane