IBM Java for AIX MustGather: General Java Performance Impacted Situations

Please complete the following first steps prior to contacting IBM Support. If these steps have not been completed, the IBM Support specialist assigned to your case may confirm that you have completed all of these steps. Therfore having completed these steps prior to contacting IBM Support will help expedite the resolution of your situation.


Step 1. Narrow the description of the performance issue to being related to CPU utilization, memory usage, network based operations, or the process execution (e.g., hanging, slow).

Step 2. Identify the IBM Java version (and specific release) and location being used with the application demonstrating the performance issue by following the instructions on the web page:

IBM Java for AIX FAQ: Identifying the Java versions and Java installation locations for an AIX system


Step 3. Indentify all of the components involved with the system and application and their versions (e.g., operating system level, application server product and versions, database product and versions).

Step 4. Perform a quick review of known issues for the IBM Java version and release being used by visiting the web page IBM Java for AIX Reference: Consolidated List of IBM Java Fixes then selecting the the link to the fixes page for the IBM Java version. If you identify any known APARs that may resolve the issue, then follow the instructions on the web page IBM Java for AIX HowTo: Install, Upgrade, or Downgrade IBM Java to download and update the version of IBM Java being used.

Step 5. If, after completing step #4, no APAR could be identified or the situation continues, then based on the assessment from step #1, select the appropriate troubleshooting and data collection instructions below.