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- Newsgroups: comp.os.vms
- Path: sparky!uunet!ulowell!woods.ulowell.edu!welchb
- From: welchb@woods.ulowell.edu
- Subject: Warning. XWATCH/SPY causes crash.
- Message-ID: <1992Dec16.114529.1@woods.ulowell.edu>
- Lines: 32
- Sender: usenet@ulowell.ulowell.edu (News manager - ulowell)
- Organization: University of Lowell
- Date: Wed, 16 Dec 1992 16:45:29 GMT
-
- There may have been previous threads on this subject which I
- missed, because I did not realize at the time that it was pertinent. So if
- this is all old stuff, please skip this message. In any case, I would
- appreciate any corrections to factual errors.
-
- We had a system crash (VMS 5.5-1). My rudimentary analysis of
- the crash dump showed "unexpected system service exception". Further
- analysis by DEC showed that it was due to use of XWATCH/SPY, by Nick
- deSmith, 1991 OCTOBER 10, even though we had used this product successfully
- many times before.
-
- The DEC engineer said
- 1) They have 2 or 3 calls a day on crashes caused by this. It writes into
- the non-paged memory pool (which is not in itself a bad thing), but
- the product is basically older and unsupported.
- 2) A typical supported 3rd-party product, but costly, would be Peek-and-Spy.
- 3) DEC is working on a similar product in collaboration with Clyde Digital.
-
- Thus I looked in the Info-VAX Monthly Posting. This pointed me
- toward the Supervisor Series. I hope this will be a reasonable, inexpensive
- cure [please correct me, especially if it too can cause crashes]. If
- other people are in the same difficulty,
- Supervisor can be obtained from FTP.SPC.EDU. I chose to
- use the file service FILESERV@WKUVX1.BITNET, with the message in the text
- SEND SUPERVISOR. This gives 33 parts that take a lot of straightforward
- but repetitive editting. This is being taken apart, even as we speak,
- by TPU in vaxshare; surprisingly this process has taken over an hour now.
- Thus I hope I am not premature or misleading in my suggested cure.
- But I did want to warn people about the crashes, and it seems reasonable
- to have the rest of the material in this same message.
- --
- Brendan Welch, UMass/Lowell, W1LPG, welchb@woods.ulowell.edu
-