Path: utzoo!mnetor!uunet!husc6!mailrus!ames!pasteur!ucbvax!MITRE-BEDFORD.ARPA!mhg
From: mhg@MITRE-BEDFORD.ARPA (Mark H. Granoff)
Newsgroups: comp.os.vms
Subject: Re: VMS exec question
Message-ID: <8803152148.AA00585@mitre-bedford.ARPA>
Date: 15 Mar 88 21:48:16 GMT
References: <8803151827.AA21861@mitre-bedford.ARPA>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 36

>To VAX gurus-wizards:
>
>I'm looking into some possibilities, and need some advice on doing the
>following:
>
>If I turn off the bit EXE$V_DUMPBUG in the longword EXE$GL_FLAGS, does anyone
>know of any non-desirable side-effects?

I assume you know what that flag means.  If it corresponds to the
SYSGEN parameter DUMPBUG, then here's what happens when it is not set
(zero):
     If DUMPBUG is not set, crash dumps are written into the page file
     on the system disk (PAGEFILE.SYS), provided there is enough room
     in the page file for a system crash dump.  If this is desireable
     (i.e. what you want), then your page file has to be as large as
     physical memory plus 1004 pages (blocks).

     If a crash dump gets written into the page file, it will be lost
     when the system is rebooted, UNLESS the SAVEDUMP parameter is set
     (non zero).  In this case, the space in the page file must be
     RELEASEd via the system dump analyzer (ANALYZE/IMAGE).

I hope this helps.  (You can find more info (or rather, the *official*
information) in the System Dump Analyzer manual, page SDA-5).

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