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Rob, Sounds good to me....of course not that I know anything either. You can check out the following links that I have used to help me 'understand' the situation. We have actually had two problems with our systems over the last 12 months in this area. One requiring an IPL and the other requiring a shutdown of all Domino servers (instead of IPL'ing). So I've tried to gain an understanding.... http://www.cocoadev.com/index.pl?ThreadSafety http://www.redbooks.ibm.com/redpieces/pdfs/sg246351.pdf The second link really revolves around CICS but it can help you get some understanding even if you don't know CICS (of which I know just about as much as threadsafe)...... Michael Crump Manager, Computing Services Saint-Gobain Containers 1509 S. Macedonia Ave. Muncie, IN 47302 (765)741-7696 (765)741-7012 f (800)428-8642 "The probability that we may fail in the struggle ought not to deter us from the support of a cause we believe to be just" Abraham Lincoln rob@xxxxxxxxx 07/21/2004 08:38 To AM Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx> Please respond to cc Midrange Systems Technical Subject Discussion Re: Cluster-RMC SRC daemon auto <midrange-l@midra start job nge.com> What is threadsafe? Well speaking as a developer who knows next to nothing about this topic let me try and answer. With the advent of PASE and other ported Unix applications (note: Domino) threads have abounded. Threads and stuff like mutex's and semaphores. There is an optional part of iSeries Navigator called Application Development. This will show you these strange things in memory. A thread can be spawned by a job. The job can end and the thread continue to run. The next job can start up and have a conflict. Hence the reason that Application Development had this part. (There is a green screen way of looking at it that a bunch of propeller heads at IBM favor that even a dyed in the wool SEU person would gag at.) Some 'early' versions of Domino spawned some of these and short of using one of the tools to clear them you had to IPL. The later versions Domino seem to have been pretty much beaten into submission. Therefore a command that is not threadsafe is not recommended to be started from within one of these threads. And I've guessed enough on this, so coming up with a hypothesis as to why any particular command may not be threadsafe would really be stretching it. To those in the know, is this a pretty good summary? Rob Berendt -- Group Dekko Services, LLC Dept 01.073 PO Box 2000 Dock 108 6928N 400E Kendallville, IN 46755 http://www.dekko.com -- This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/midrange-l or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l.
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