Troubleshooting
Problem
This document describes various ways to set ulimit values on UNIX and Linux operating systems as well as information that pertains to WebSphere Application Server
Symptom
Tuning ulimits correctly can overcome these errors, and this document provides guidance in setting ulimits in general
- Too Many Open Files
- Could not lock User prefs. Unix Error Code 24.
- Truncated core dumps or heapdumps
Table Of Contents
- Is it possible to display the current ulimit settings?
- How are ulimits set?
- Specifics for each Operating System
- If I am experiencing Too Many Open Files (Unix Error Code 24), can I increase the number of file descriptors?
- On Linux, can I set the ulimit for the number of open files to unlimited?
- I am using an /etc/init.d script (or inittab) to start my application server and setting the global ulimit settings had no effect?
[{"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"General","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"}],"Version":"9.0;8.5.5;8.5;8.0;7.0;6.1","Edition":"Base;Express;Network Deployment","Line of Business":{"code":"LOB77","label":"Automation Platform"}}]
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Document Information
Modified date:
03 March 2025
UID
swg21469413