Product Documentation
Abstract
AIX Support Center Tools
Content
The following information describes the pdump tool, its options and uses.
Purpose
Extracts and gathers information from a running process
Using the script
Step 1. Determine what process is hung.
If you suspect a process is hung, first find its <pid#> using the ps command. Then, using proctree <pid#> , check if that process has child processes that it might be waiting on. If the parent process is waiting on a child process, then you should first try running pdump.sh on the last child found in the proctree.
Step 2. Run pdump on the process.
pdump.sh <pid#>
Where <pid#> is the process id that is suspected to be hung or looping.
If you cannot determine which specific process is hung, you may simply run pdump.sh against PID 1 (the init process) as a start point for investigation
pdump.sh 1
Tips
- It is often helpful to run two pdumps on the same process at 60 second intervals. This will allow IBM AIX support center representatives to verify if that process made any progress in that time frame. Capture this information and include it in the testcase you upload to IBM.
- Try running pdump with only the -l flag (long mode) unless instructed by your support representative to do otherwise. The -d flag (call dbx) might fail to attach to the process when it is hung in kernel mode.
Related information
How do I ......
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If you require more assistance, use the following step-by-step instructions to contact IBM to open a case for software with an active and valid support contract. 1. Document (or collect screen captures of) all symptoms, errors, and messages related to your issue. 2. Capture any logs or data relevant to the situation. 3. Contact IBM to open a case: -For electronic support, see the IBM Support Community: 4. Provide a clear, concise description of the issue. 5. If the system is accessible, collect a system snap, and upload all of the details and data for your case. - For guidance, see: Working with IBM AIX Support: Collecting snap data |
Related Information
Document Location
Worldwide
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Document Information
Modified date:
10 April 2020
UID
aixtools6b0ed41f