[JCA/JBoss] - Re: Is JCA clustered?
by jorgemoralespou_2
Yes. Here it goes.
1- We have 2 node cluster accesing an Ldap backend via JCA conx. (node-1, node-2)
2- Our Ldap server is restarted (due to maintenance)
3- We have a bug in our Ldap JCA conector, that doesn't detect invalid conections. So no reconnection happens.
4- In this point, bot nodes (node-1 and node-2) don't have valid connections in pool.
5- We undeploy and redeploy ldap datasource in node-1, which makes old connections die, and creates new connections.
6- In node-2 Ldap recreates connections succesfully. (Note we haven't touched this server at all)
This same behaviour has also happened with JMS jca connector, but we have this configured as clustered, so, somehow can be normal.
Is it more clear now?
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18 years
[Management, JMX/JBoss] - Remote JBoss Management, conceptual doubt.
by eduterio
Hi,
I have some trouble understanding the way JBoss and JMX interacts.
I mean:
JBoss has its own JMX implementation to assemble its own Components.
You can get to its JMX "MBeans Server" through its web-based jmx-console, and you can see all the jboss MBeans and user developed MBeans.
But when I try to access the JBoss MBean Server from out of its jmx-console, say using jconsole tool from the JDK 5.0, I am not able to do so, jconsole doesn't find anything manageable running on the machine.
I am worried about this because I need to access the MBeans deployed in JBoss from out of jboss, from a Java program running on another machine.
If I start any other JVM 5.0 with the appropriate attributes to make JMX management available, y can manage them from a remote machine and from JConsole with no trouble.
Even if I start JBoss JVM with these attributes, I can manage the JVM of JBoss, but it does NOT show me the internal JBoss MBeans, nor the user MBeans. It show me the standard MBeans of any JVM.
Can anybody help me?
Thanks a lot.
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18 years
[JBoss jBPM] - JBPM JPDL Architecture/Design
by iventer
I'm currently doing proof of concept work for a government agency for workflow implementation.
What we are considering doing is having a workflow farm for want of a better word. Where all their current applications that require workflow would hook into.
In this model the workflow engine app would have the schema where all workflow process definitions are deployed to for all the client applications. The work flow engine app would be fronted with a stateless session ejb (SLSB) which the client apps would user for interface.
Are there any potential pittfalls for this kind of a design. I'm very new to jBPM so there are probably things that i have'nt considered that would lead me to sway away from this kind of solution.
One of the main concerns is that the jbpm schema is a black box and if something went wrong there it could have bad consequences for all applications using workflow. Other issues would be around upgrading from one version of jbpm to another. Though these 2 concerns would be a problem for any design i'm just trying to findout if what i propose could maybe be done better.
All responses welome.
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18 years