Hi Sophie. We have run the BRMS for some time now, - not able to see this. If its still happening - are you able to share the log file for the server with us at all?

Michael.

On Jan 23, 2008 10:29 PM, <sophie.ramel@tudor.lu> wrote:
Well, I'm pretty sure no agent hit the brms on my server last week, it's a
development server and I'm currently the only one using it, so the agent
wasn't instantiated (or perhaps I tried it once or twice at the beginning
of the week, to check that it worked, but that's all).

The tomcat version was tomcat 5.5 (but here again, the error also occurs
in Jboss 3.2.8), jdk is jdk 1.5.0 , and the system is an old Red Hat 7.2.

Regards,

Sophie




Michael Neale <michael.neale@gmail.com>
Sent by: rules-users-bounces@lists.jboss.org
23/01/2008 12:39
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Re: [rules-users] OutOfMemory with BRMS 4.0.3






Ok so yes the error is on the brms web app. The agent will poll the
brms , so that may be causing it.

So, could you try to run the brms without the agent hitting it and see
if it happens ( will narrow it down massively)? Also, what tomcat, jdk
and I
Os version?

Sent from my iPhone

On 23/01/2008, at 1:54, sophie.ramel@tudor.lu wrote:

> Hello michael,
>
>> Is the rule agent running on a separate server to the brms?
> The initial configuration was:
> - BRMS in tomcat 5.5
> - server with RuleAgent in Jboss AS 3.2.8
>
> But now I moved to this configuration:
> - server with RuleAgent in Jboss AS 3.2.8 (unchanged)
> - BRMS is also in the same jboss instance
>
> And in both cases I have the problem.
>
>> Is the rule agent actually running when the error happens?
> No I don't think so.
> I don't have any exception before I try to go to a web page (either
> of the
> BRMS, or of my other server in Jboss when the BRMS is in the same
> jboss
> instance), and then I get OufOfMemoryError: Java heap space. The
> RuleAgent
> is only instantiated when I send a specific request to my server
> (and I'm
> not even sure it was called once before the last crash).
>
>> Also that is an old version  of jboss as?
> yes, it's Jboss application server 3.2.8 (I think it is the last and
> only
> one in the 3.x series that works with JDK 1.5): I need to use an older
> version because of other compatibility issues of my server, but
> since I
> had exactly the same problem with Tomcat, I'm beginning to think it
> may
> not be linked to the server version ...?
>
> Regards,
>
> Sophie
>
>
>
>
> Michael Neale <michael.neale@gmail.com>
> Sent by: rules-users-bounces@lists.jboss.org
> 22/01/2008 11:31
> Please respond to
> Rules Users List <rules-users@lists.jboss.org>
>
>
> To
> Rules Users List <rules-users@lists.jboss.org>
> cc
> Rules Users List <rules-users@lists.jboss.org>
> Subject
> Re: [rules-users] OutOfMemory with BRMS 4.0.3
>
>
>
>
>
>
> Thanks sophie. A few more questions to narrow this down. Is the rule
> agent running on a separate server to the brms? Is the rule agent
> actually running when the error happens? Also that is an old version
> of jboss as?
>
> I guess the rest depends on your answers to the above.
>
> Let me know.
>
> Michael
>
>
>
> Sent from my iPhone
>
> On 21/01/2008, at 23:03, sophie.ramel@tudor.lu wrote:
>
>> Hello again,
>>
>> After coming back after almost a week without touching the server,
>> the
>> jboss application server with the BRMS also makes a OutOfMemory
>> exception
>> when I try to use the BRMS.
>>
>>> When you get back to work if you could provide more info it would be
>> great.
>> What kind of info do you need?
>> Here is what is done in my server code, to fire the rules:
>>
>> Properties props=new Properties();
>> props.setProperty("newInstance", "false");
>> props.setProperty("url", packageURL);
>> props.setProperty("localCacheDir", cacheDir);
>> props.setProperty("poll", "30");
>> props.setProperty("name", "Agent-"+pid);
>> RuleAgent agent = RuleAgent.newRuleAgent(props);
>> RuleBase rb = agent.getRuleBase();
>> workingMemory=ruleBase.newStatefulSession();
>>
>> and then we insert all objects in the working memory with "wm.insert
>> (o);",
>> but recursively in order for all the objects to be directly
>> accessible in
>> rules (We've got a hierarchic structure, an XML file transformed in
>> Java
>> by JAXB, so the insert method tests the accessor methods of the
>> object and
>> is called recursively on the accessors' results, before inserting the
>> object).
>>
>> then we call:
>> workingMemory.fireAllRules();
>> [...interprate results...]
>> workingMemory.dispose();
>>
>>
>> Best regards,
>>
>> Sophie
>>
>>
>>
>> Michael Neale <michael.neale@gmail.com>
>> Sent by: rules-users-bounces@lists.jboss.org
>> 17/01/2008 23:34
>> Please respond to
>> Rules Users List <rules-users@lists.jboss.org>
>>
>>
>> To
>> Rules Users List <rules-users@lists.jboss.org>
>> cc
>> Rules Users List <rules-users@lists.jboss.org>
>> Subject
>> Re: [rules-users] OutOfMemory with BRMS 4.0.3
>>
>>
>>
>>
>>
>>
>> Thanks sophie. Any oome I will investigate it just takes time to find
>> them. I have been running some overnight tests myself today. When you
>> get back to work if you could provide more info it would be great.
>>
>> If the agent is running then it polls the brms. So that could be one
>> of the possible causes.
>>
>> Sent from my iPhone
>>
>> On 17/01/2008, at 22:44, sophie.ramel@tudor.lu wrote:
>>
>>> Hi Michael,
>>>
>>> I'm not at my company these days so I cannot check or make further
>>> tests.
>>> But yes, we use a rule agent and an URL to query the rule.
>>> And it happens after 1-2 days whether we use the system or not, it
>>> doesn't
>>> seem to make any difference.
>>>
>>> however, I'll check when returning, but I think it still worked
>>> after a few
>>> days, now that I have moved the BRMS to the Jboss 3.2.3 app server.
>>>
>>> thanks for trying to help me!
>>>
>>> Sophie
>>>
>>> -----rules-users-bounces@lists.jboss.org wrote: -----
>>>
>>> To: "Rules Users List" <rules-users@lists.jboss.org>
>>> From: "Michael Neale" <michael.neale@gmail.com>
>>> Sent by: rules-users-bounces@lists.jboss.org
>>> Date: 01/17/2008 12:52AM
>>> Subject: Re: [rules-users] OutOfMemory with BRMS 4.0.3
>>>
>>> Hi Sophie - how is the jboss "runtime" server querying this? via the
>>> rule
>>> agent (and a URL)?
>>>
>>> just trying to work out what the usage pattern is so we can
>>> reproduce it.
>>>
>>> Michael.
>>>
>>>
>>> On Jan 11, 2008 12:20 AM,  <
>>> sophie.ramel@tudor.lu
>>>> wrote:
>>>
>>> Hello,
>>>
>>> I am using Drools BRMS 4.0.3 with tomcat 5.5.25, and I get
>>> OutOfMemory
>>> exceptions in tomcat regularly.
>>>
>>> I recently changed the java option of tomcat to add "-Xmx512m", but
>>> it
>>> only resulted in taking a little more time before crashing (3 days,
>>> instead of 1 before).
>>> The server has nearly no access - it's a development server which is
>>> not a
>>> lot used at the moment - and there are only a few rules, for tests,
>>> so I
>>> really don't understand this error. I'm using java
>>> 1.5.0 on a linux
>>> server.
>>>
>>> The BRMS is accessed by web, to create and deploy the rules, and
>>> queried
>>> from another tool (on the same machine but in another server: in
>>> JBoss),
>>> to insert data in a workingMemory and execute the rules from the
>>> deployed
>>> package URL. I call the dispose() method on the StatefulSession at
>>> the end
>>> of the query (but this shouldn't be linked to this error, since this
>>> is in
>>> JBoss and the OutOfMemory occurs in tomcat...).
>>>
>>> Any idea?
>>> Thanks,
>>>
>>> Sophie
>>> _______________________________________________
>>> rules-users mailing list
>>> rules-users@lists.jboss.org
>>>
>>>
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>>
>>>
>>>
>>> --
>>> Michael D Neale
>>> home:
>>> www.michaelneale.net
>>>
>>> blog:
>>>
>>> michaelneale.blogspot.com
>>>
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