Thanks for your replies. The SRB is sampling the address space so it tolerates statically error and uncertainty.
What I'd like to try and nail down is whether the TCB is dispatchable but no CPU is available *or* is actually executing. Any ideas? I was wondering, could the SRB examine the TCB queue hung of ASXBFTCB to determine if the TCB is dispatchable? Regards, Vic ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html