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Siebel Performance Tuning Guide > Tuning Operating Systems for Performance > Tuning Siebel Business Applications for AIX >
Tuning Kernel Settings for IBM AIX
This topic is part of Tuning Siebel Business Applications for AIX. There are several IBM AIX kernel settings that you can tune for optimal Siebel Server or Web server performance under AIX. These include the Virtual Memory Management and TCP settings. You must have root privileges to modify these settings. Use the vmo, ioo, and no commands to tune the AIX kernel. For more information about AIX kernel settings, including several that are not mentioned in this guide, see 1097858.1 (Article ID) on My Oracle Support. See also your operating system vendor's documentation. To change the kernel settings
- Using a text editor such as vi, open the
/etc/rc.net file for editing.
- Modify settings using ioo and no, following the guidance of 1097858.1 (Article ID) on My Oracle Support.
NOTE: Use default values for settings for vmo.
- Check the settings for all User Limits (ulimit) and make sure that they are set to -1 (unlimited), as follows:
ulimit -a
NOTE: To change the set limits, update the /etc/security/limits file by changing all ulimit parameter values to -1 (unlimited).
- Save your changes and exit the editor.
- Make sure that the rpc.statd and rpc.lockd daemons run on the Siebel Server computer and on the server computer where the Siebel File System is located. Then set the number of threads for the rpc.lockd daemon on each applicable server computer.
It is recommended to increase the number of rpc.lockd daemon threads from the default. If possible, use the maximum number of threads, which is 511. System degradation can occur and logins might be blocked if the rpc.lockd daemon is not configured to handle a large number of lock requests. For example, you might execute commands like this:
chssys -s rpc.lockd -a 511
stopsrc -s rpc.lockd; startsrc -s rpc.lockd
- Restart the server computer to have the new settings take effect.
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