Re: Is PSATOLD always zero when in SRB mode?
-Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Peter Relson Sent: Thursday, March 06, 2008 6:45 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Is PSATOLD always zero when in SRB mode? The answer is yes. But you might want to ask the converse question: If PSATOLD is zero, are you in SRB mode? The answer is not always. There is a small case in z/OS that we call pseudo-SRB mode where a task was running (had PSATOLD non-zero) and the system zeroes PSATOLD and continues for a while. This can happen in memory termination situations, for example. SNIP Could you point us to where this is documented (the ways this can happen)? It seems that we have gotten dumps now and then from customers where PSATOLD = 0 and it really should not have been (from our perspective). We were in one of our ESTAE routine or one of our DISPLAY routines. We do not use SRB mode ever (barring the system doing it on our behalf). Regards, Steve Thompson -- All opinions expressed by me are my own and may not necessarily reflect those of my employer. -- -- 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
Re: Is PSATOLD always zero when in SRB mode?
IBM Mainframe Discussion List IBM-MAIN@BAMA.UA.EDU wrote on 03/07/2008 09:37:39 AM: -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Peter Relson Sent: Thursday, March 06, 2008 6:45 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Is PSATOLD always zero when in SRB mode? The answer is yes. But you might want to ask the converse question: If PSATOLD is zero, are you in SRB mode? The answer is not always. There is a small case in z/OS that we call pseudo-SRB mode where a task was running (had PSATOLD non-zero) and the system zeroes PSATOLD and continues for a while. This can happen in memory termination situations, for example. SNIP Could you point us to where this is documented (the ways this can happen)? It seems that we have gotten dumps now and then from customers where PSATOLD = 0 and it really should not have been (from our perspective). We were in one of our ESTAE routine or one of our DISPLAY routines. We do not use SRB mode ever (barring the system doing it on our behalf). It isn't documented. But you will not observe PSATOLD = 0 in your ESTAE routine or DISPLAY routines. You may of course observe PSATOLD = 0 in dumps, but your ESTAE routine or DISPLAY was not running on that CPU at the time its PSA was dumped. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY -- 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
Re: Is PSATOLD always zero when in SRB mode?
The answer is yes. But you might want to ask the converse question: If PSATOLD is zero, are you in SRB mode? The answer is not always. There is a small case in z/OS that we call pseudo-SRB mode where a task was running (had PSATOLD non-zero) and the system zeroes PSATOLD and continues for a while. This can happen in memory termination situations, for example. It is not a state that your program should see. PSATOLD = 0 works for all practical purposes. Peter Relson z/OS Core Technology Design -- 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
Re: Is PSATOLD always zero when in SRB mode?
Eyes wide shut. Thanks. Jerry On Thu, 6 Mar 2008 07:44:47 -0500, Peter Relson [EMAIL PROTECTED] wrote: There is a small case in z/OS that we call pseudo-SRB mode where a task was running (had PSATOLD non-zero) and the system zeroes PSATOLD and continues for a while. This can happen in memory termination situations, for example. It is not a state that your program should see. -- 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
Is PSATOLD always zero when in SRB mode?
Always? Sometimes not? If the latter, is there a sure-fire way to test for running in SRB mode? TIA, Jerry -- 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
Re: Is PSATOLD always zero when in SRB mode?
Asked and answered. Thanks Tom and Binyamin. Jerry -- 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
Re: Is PSATOLD always zero when in SRB mode?
On Wed, 5 Mar 2008 05:55:54 -0600 Support, DUNNIT SYSTEMS LTD. [EMAIL PROTECTED] wrote: :Always? Sometimes not? If the latter, is there a sure-fire way to test for :running in SRB mode? Always. -- Binyamin Dissen [EMAIL PROTECTED] http://www.dissensoftware.com Director, Dissen Software, Bar Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother responding to challenge/response systems, especially those from irresponsible companies. -- 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
