If you have granted USS superuser privileges to the Application Performance Analyzer started task, you may skip this step.
-Dcom.ibm.tools.attach.directory=/tmp/.com_ibm_tools_attach
The J9VM creates work files in the directory /tmp/.com_ibm_tools_attach.
If the Application Performance Analyzer configuration setting DiagLevel is set to 7 or higher, Application Performance Analyzer creates a diagnostic file for each observation request in the directory /tmp/CAZ. The diagnostic file is named sysid.nnnn.pppppppp.JVMTI.txt, where sysid is the Application Performance Analyzer started task identifier, nnnn is the observation request number, and pppppppp is the process id of the target application.
Application Performance Analyzer also writes stdout and stderr files in the /tmp/CAZ directory if DiagLevel is set to 7 or higher. The files are named sysid.stdout and sysid.stderr, where sysid is the Application Performance Analyzer-started task identifier.