Connecting to multiple JMX servers

Hello,
I'm working under JRockit 1.9 150 and WL Integration 8.1.
My application connects to multiple WL servers to retrieve data with JMX. The connections are established when the application initializes and they are kept during the execution. I use this code to make connections:
Environment env = new Environment();
env.setProviderUrl(url);
env.setSecurityPrincipal(user);
env.setSecurityCredentials(password);
Context ctx = env.getInitialContext();
home = (MBeanHome) ctx.lookup(MBeanHome.LOCAL_JNDI_NAME);
rmbs = home.getMBeanServer();
The problem is that I only can connect to the server which I make the last connection. With the other servers I get this response:
error[...] [Security:090398]Invalid Subject: weblogic
I can solve the problem making always a new connection to the server, but I think it's not the best solution.
Any opinion?
Thanks

http://sourceforge.net/projects/sshtools/

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