[rules-users] OutOfMemory with BRMS 4.0.3

[sophie.ramel at tudor.lu]

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 at gmail.com> 
Sent by: rules-users-bounces at lists.jboss.org
17/01/2008 23:34
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Rules Users List <rules-users at lists.jboss.org>


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Rules Users List <rules-users at 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 at 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 at lists.jboss.org wrote: -----
>
> To: "Rules Users List" <rules-users at lists.jboss.org>
> From: "Michael Neale" <michael.neale at gmail.com>
> Sent by: rules-users-bounces at 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 at 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
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>
>
> --
> Michael D Neale
> home:
> www.michaelneale.net
>
> blog:
>
> michaelneale.blogspot.com
>
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