MustGather: Read first for - Runtimes for Java Technology
 Technote (troubleshooting)
 
Problem(Abstract)
For every problem, collecting data can aid in problem determination and save time resolving Problem Management Records (PMRs).

Gathering this data before calling IBM® support will help you understand the problem and save time analyzing the data.
 
Resolving the problem
Collecting MustGather data early, even before opening a PMR, helps IBM® Support quickly determine if:
  • Symptoms match known problems (rediscovery)
  • There is a non-defect problem that can be identified and resolved
  • There is a defect that identifies a workaround to reduce severity
  • Locating root cause can speed development of a code fix



Gathering general information
There are a number of diagnostic capabilities built into the operating system and into the Java™ Runtime that enable problem determination of both application and Java Runtime based problems.

The information below will allow you to activate, generate, and collect data required to solve these problems. This data must be collected for the Java service team when reporting a problem.

Gathering component specific information
If one of the product components below matches your symptom, or the part of the product with which you are experiencing problems, follow the instructions in the associated MustGather document:

Components
100% CPU Usage
Crash
Daylight Saving Time (Technotes, Flashes, and APARs only)
Debugging Options
Debugging Tools
Hangs/Performance Degradation
Out Of Memory



Submitting information to IBM Support
After a PMR is open, you can submit diagnostic MustGather data to IBM.

If using SR, update the PMR to indicate that data has been sent.


Related information
 
 
Cross Reference information
Segment Product Component Platform Version Edition
Application Servers WebSphere Application Server Java SDK
Application Servers WebSphere Real Time General
 
 


Document Information


Product categories: Software > Application Servers > Distributed Application Support > Runtimes for Java Technology > General
Operating system(s): z/OS
Software version: 5.0
Software edition:
Reference #: 1231557
IBM Group: Software Group
Modified date: Sep 3, 2008