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MessageQ/CLS: Undocumented feature for troubleshooting - DMQ$CLS_TRACEBACK (Doc ID 873726.1)

Last updated on OCTOBER 27, 2020

Applies to:

Oracle MessageQ - Version 4.0 to 5.0
HP OpenVMS Itanium
HP OpenVMS Alpha
HP VAX OpenVMSHP OpenVMS ItaniumHP OpenVMS Alpha


This feature is handy in troubleshooting CLS server crashing with unexpected signal.

If the DMQ$CLS_TRACEBACK logical name is defined we return without establishing the default signal handlers. This allows a run-time error to generate a traceback instead of being trapped by the signal handler.   This is an undocumented feature that is handy for troubleshooting.

Troubleshooting Steps

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Troubleshooting Steps

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