postgres startup blues: pre-existing shared memory block (key 5432001, ID 0) is still in use

[Dan]

Nick Urbanik wrote:

> $ sudo -u postgres ipcclean
> Shared memory 0 ... cannot remove id 0 (Operation not permitted)
> $ sudo ipcrm -q 5432001
> ipcrm: invalid id (5432001)
> 

I would doubt these commands would do much, unless postgresql is 
starting and dieing without releasing shared memory segments.

Did this behavior begin after doing some updates? Can you try with an 
older kernel?

I'm currently running kernel-2.6.24.3-50.fc8 and postgresql without issue.