If you have a loop, hang, or wait state in a process and need a dump for diagnosis, you need to dump several types of data:

• The kernel address space.
• Any kernel data spaces that might be associated with the problem.
• Any process address spaces that might be associated with the problem.
• Appropriate storage areas containing system control blocks (for example, SQA, CSA, RGN, TRT).

The steps are:

1. Use the DISPLAY operator command to display information about currently active address spaces and data spaces.
2. Allocate a sufficiently large dump data set.
3. Take the dump.
4. Review the dump completion information.