Barbara,
>
I don't think anyone says that software is perfect. WHat I personally find
sad is that just about every Java programmer doesn't know and doesn't care
what the underlying architecture does and hence is incapable of even
analyzing anything.
We currently have a problem where a java application has its main thread
silently terminating, leaving all other threads active but doing nothing.
The application is incapable of determining *why* that thread terminates
and is playing a guessing game. 'It must be too few storage.' Well, even
increasing the storage caused the hang ('this is not a hang').
And did I mention that that address space has region=0M and even gets
region=0M (as in everything available above and below - nothing is used
below, the usage above is negligible).
One thing that rubs me (and probably others) the wrong way is the
implication that a storage leak (or whatever the current mnemonic is) is
something to be tolerated and encouraged by specifying region=0M (your
wording "... I am not sure why customers would want to run Java without
REGION=0M, as without it , it is possible to cause a JVM abend. ..." came
across like this to me).
I am with Ed on this: Give me a good unconditional getmain so I can set a
slip trap in abend878/80a/whatever and get good doc. And I have an
abending application that doesn't hang around probably exposing other bugs
(like why the hell doesn't the main thread take all other threads with it
as they can't do anything anyway.)
>
1. You have really misunderstood me, the reason for REGION=0M is not to
tolerate a leak, it is to ensure that the JVM has enough storage for
normal operation and to avoid "avoidable" 878 abends etc. I wish I had
never mentioned "leaks" now.
2. Why not raise a PMR if you have a problem?
3. Many of the problems that I see are the result of an abend, e.g. 878-10
------------------------------------------------------------------------------------------------------------------
Mike Poil
Java z/OS Level 3 Service
IBM United Kingdom Limited, Hursley Park, Winchester SO21 2JN
Internal: 246824 External: +44 (0)1962 816824
Java debugging: http://www.ibm.com/developerworks/java/jdk/diagnosis/
------------------------------------------------------------------------------------------------------------------
Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number
741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
----------------------------------------------------------------------
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
