Linux Oracle tuning parameter : ulimits

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« Linux Oracle tuning parameter : Message queues | Main | Linux vs. Oracle Tuning, Error : ORA-00845: MEMORY_TARGET not supported on this system »

By Martin | June 5, 2009

To view current settings, run command:
ulimit -a

To set it to a new value for this running session, which takes effect immediately, run command:
ulimit -n 8800
ulimit -n -1 // for unlimited; recommended if server isn’t shared

Alternatively, if you want the changes to survive reboot, do the following:

- Exit all shell sessions for the user you want to change limits on.
- As root, edit the file /etc/security/limits.conf and add these two lines toward the end:
oracle soft nofile 16000
oracle hard nofile 20000
** the two lines above changes the max number of file handles – nofile – to new settings.
- Save the file.
- Login as the user1 again. The new changes will be in effect.

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