APT_DEBUG_SIGNALS
APT_DEBUG_SIGNALS specifies that signals such as SIGSEGV, SIGBUS, and so on, should cause a debugger to start.
If any of these signals occurs within an APT_Operator::runLocally() function, a debugger such as dbx is invoked.
Note that the UNIX and InfoSphere® DataStage® variables DEBUGGER, DISPLAY, and APT_PM_XTERM, specifying a debugger and how the output should be displayed, must be set correctly.