z/OS UNIX System Services Planning
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Diagnosing hangs during z/OS UNIX initialization

z/OS UNIX System Services Planning
GA32-0884-00

If there is a hang during initialization, the hang is likely to occur during the initialization process (/etc/init and etc/rc).

If you receive message BPXP006E indicating that z/OS UNIX is being initialized, you can check the /etc/log file to see what the last command processed from /etc/rc was. This might help you determine the cause of delay or hang.

The sample /etc/rc file that is shipped with z/OS UNIX includes the set -v -x command. That command specifies that shell input lines are to be printed to /etc/log as they are run, in addition to commands and their arguments.

Tip: If you are a superuser (permission to BPX.SUPERUSER is not sufficient), you can view /etc/log during a hang in /etc/rc by starting a shell from a superuser and issuing the following command:
cat /etc/log

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