[Info-vax] help needed diagnosing/debugging java.lang.OutOfMemoryError

[Jan-Erik Soderholm]

VAXman- @SendSpamHere.ORG wrote 2011-08-18 14:43:
> In article<4e4c6bba$0$308$14726298 at news.sunsite.dk>, =?ISO-8859-1?Q?Arne_Vajh=F8j?=<arne at vajhoej.dk>  writes:
>> On 8/17/2011 8:23 AM, VAXman- @SendSpamHere.ORG wrote:
>>> In article<4e4b2601$0$314$14726298 at news.sunsite.dk>, =?ISO-8859-1?Q?Arne_Vajh=F8j?=<arne at vajhoej.dk>   writes:
>>>> On 8/16/2011 9:59 PM, VAXman- @SendSpamHere.ORG wrote:
>>>>> In article<4e4b055e$0$314$14726298 at news.sunsite.dk>, =?ISO-8859-1?Q?Arne_Vajh=F8j?=<arne at vajhoej.dk>    writes:
>>>>>> On 8/16/2011 9:07 AM, VAXman- @SendSpamHere.ORG wrote:
>>>>>>> In article<4e49c081$0$314$14726298 at news.sunsite.dk>, =?ISO-8859-1?Q?Arne_Vajh=F8j?=<arne at vajhoej.dk>     writes:
>>>>>>>> On 8/15/2011 8:43 PM, VAXman- @SendSpamHere.ORG wrote:
>>>>>>>>> In article<4e4994ad$0$312$14726298 at news.sunsite.dk>, =?ISO-8859-1?Q?Arne_Vajh=F8j?=<arne at vajhoej.dk>      writes:
>>>>>>>>>> On 8/15/2011 2:11 PM, VAXman- @SendSpamHere.ORG wrote:
>>>>>>>>>>> What the subject says...
>>>>>>>>>>>
>>>>>>>>>>> An application in development for use on an OpenVMS system is tossing up
>>>>>>>>>>> this error.  I've increased the page file quota for APACHE$WWW to 1M and
>>>>>>>>>>> there is still this error.  The logs produced by this Java stuff do not
>>>>>>>>>>> tell much.  Is there some way to get a dump or more logging?
>>>>>>>>>>>
>>>>>>>>>>> PS. I don't do Java (unless it's in my coffee mug) and thus, I'm not the
>>>>>>>>>>> one developing the app.
>>>>>>>>>>
>>>>>>>>>> First: 512 MB is not that much today.
>>>>>>>>>>
>>>>>>>>>> Second: what value does the -Xmx option for the java command? (it also
>>>>>>>>>> limits the maximum memory that can be allocated)
>>>>>>>>>
>>>>>>>>> Well, it pukes with -Xmx384m
>>>>>>>>
>>>>>>>> Then try 512m 768m 1024m (and make sure that there is backing for it).
>>>>>>>
>>>>>>> The STARTUP pukes @ -Xmx384m complaining about memory.
>>>>>>
>>>>>> Does the account starting the app have more
>>>>>> than 384 MB available (page file quota)?
>>>>>
>>>>> SYSTEM account has 2000000 on this particular machine.  That's a gig in
>>>>> my book.
>>>>
>>>> Yup.
>>>>
>>>> What exactly does "pukes" mean?
>>>
>>> the out of memory errors.
>>>
>>>> And what Java version?
>>>
>>> 1.5.07  This is on Alpha.
>>
>> Does it run with 768m?
>
> If Java won't start with more than 256m and the application pukes on that,
> there's little chance of 768m.
>
> The developer of this, AFAICT, was not too enamoured of working on OpenVMS
> and convinced the company that a Linux box is the only system that would
> work.

Probably not becuse it's Linux, but becuse it has 8, 16 (or
whatever) GB's of memory.

> The WAY to keep people on VMS is to get these Open Source products working
> out of the box with VMS friendly installations for a start.  The Convoluted
> look here, there and everywhere for configuation parameters and logs is one
> other nightmare.

But, this "nightmare" is standard proceedure on those other
systems, not ? It's just us VMS'er that are not used to it.