Tom Lane wrote: > ngaleyev@xxxxxxxxxxxxxxxxxx writes: > > 2007-07-03 19:20:42 EDT 2928 FATAL: could not create shared memory > > segment: Invalid argument > > 2007-07-03 19:20:42 EDT 2928 DETAIL: Failed system call was > > shmget(key=5432001, size=3276259328, 03600). > > 2007-07-03 19:20:42 EDT 2928 HINT: This error usually means that > > PostgreSQL's request for a shared memory segment exceeded your kernel's > > SHMMAX parameter. You can either reduce the request size or reconfigure > > the kernel with larger SHMMAX. To reduce the request size (currently > > 3276259328 bytes), reduce PostgreSQL's shared_buffers parameter (currently > > 393216) and/or its max_connections parameter (currently 250). > > > heres my sysctl: > > kernel.shmmax=4294967296 > > kernel.shmall=536870912 > > Why have you got SHMALL set to half a GB when you have Postgres > configured to ask for over 3 GB? Hmm, isn't shmall measured in pages? I think the problem may be that he changed the settings in sysctl.conf but he hasn't rebooted since, so the kernel is running with other settings. Trying with sysctl -w to change the actual values might prove helpful. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc.
