Troubleshooting
Problem
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
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.
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
The Java Mustgathers with respect to platforms and problem scenario is provided below for your reference:
Platform | Problem scenario | Setup/Gather |
AIX, Linux, Windows, z/OS | Java Exception | |
| Crash due to Shared class cache corruption | ||
| VerifyError | ||
AIX | OutOfMemoryError | |
| High Processor Usage | ||
| Crash | ||
| Hang/Bad Performance | ||
Linux | OutOfMemoryError | |
| High Processor Usage | ||
| Crash | ||
| Hang/Bad Performance | ||
Windows | OutOfMemoryError | |
| High Processor Usage | ||
| Crash | ||
| Hang/Bad Performance | ||
z/OS | OutOfMemoryError | |
| High Processor Usage | ||
| Crash | ||
| Hang/Bad Performance |
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
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Document Information
Modified date:
15 June 2018
UID
swg21231557