This is still not fixed. I just installed postgresql-9.1 on a brand new
installation of Ubuntu 13.04 (64-bit) and received the following error
when attempting to start the server:
* Starting PostgreSQL 9.1 database server
* The PostgreSQL server failed to start. Please check the log output:
2013-08-26 11:40:41 PDT FATAL: could not create shared memory segment:
Invalid
argument
2013-08-26 11:40:41 PDT DETAIL: Failed system call was shmget(key=5432001,
size
=41263104, 03600).
2013-08-26 11:40:41 PDT HINT: This error usually means that PostgreSQL's
reques
t 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 41263104 bytes), reduce PostgreSQL's
shared
memory usage, perhaps by reducing shared_buffers or max_connections.
If the request size is already small, it's possible that it is less than
your kernel's SHMMIN parameter, in which case raising the request size or
recon
figuring SHMMIN is called for.
The PostgreSQL documentation contains more information about shared memo
ry configuration.
[fail]
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https://bugs.launchpad.net/bugs/264336
Title:
pgsql fails to start due to shared buffer setting greater than kernel
allows
Status in “linux” package in Ubuntu:
Won't Fix
Status in “postgresql-8.3” package in Ubuntu:
Won't Fix
Status in “postgresql-9.1” package in Ubuntu:
Confirmed
Status in “postgresql-common” package in Ubuntu:
Invalid
Status in “linux” source package in Jaunty:
Won't Fix
Status in “postgresql-8.3” source package in Jaunty:
Won't Fix
Status in “postgresql-9.1” source package in Jaunty:
Invalid
Status in “postgresql-common” source package in Jaunty:
Invalid
Bug description:
Binary package hint: postgresql-8.3
Freshly installed pgsql 8.3 on hardy got me this error when restarting:
2008-09-03 09:16:39 EDT DETAIL: Failed system call was shmget(key=5432001,
size=38207488, 03600).
2008-09-03 09:16:39 EDT 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 38207488 bytes), reduce
PostgreSQL's shared_buffers parameter (currently 4096) and/or its
max_connections parameter (currently 103).
If the request size is already small, it's possible that it is less
than your kernel's SHMMIN parameter, in which case raising the request size or
reconfiguring SHMMIN is called for.
The PostgreSQL documentation contains more information about shared
memory configuration.
Checking the kernel settings:
sudo sysctl -a | grep -i shm
kernel.shmmax = 33554432
kernel.shmall = 2097152
kernel.shmmni = 4096
The shared_buffers setting defaults to 32MB. I changed this down to
25MB to test and then the server would start right up.
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