The configuration tips for a first-time setup apply to the Informix Server Version 11.70.xC2.
The Size of /dev/shm
On many Linux systems the temporary, RAM-based file system tmpfs is mounted to /dev/shm and has a size that is configured to be half of the physically existing RAM. This may not be sufficient for IWA and hence may need to be increased accordingly.
To permanently change the size of /dev/shm perform the following steps:
- Open the file /etc/fstab as user root with an editor.
- Locate the entry for /dev/shm and set the size
option for tmpfs to the desired size. For example to set the size
to 15 GB the entry should look like this:
tmpfs /dev/shm tmpfs defaults,size=15g 0 0
See the man page for
mountfor more information on the tmpfs file system options and the man page for
fstabon the format of entries in the /etc/fstab file.
- Save the changes in the editor to the file.
- To immediately make the change effective without the need for a
reboot of the system remount the file system with a command like:
mount -o remount /dev/shm