I'm using a simple client/server application for persisting data into a database.
In a for() loop on my client a bean class method is called to persist entities.

On jBoss 4.2.2 this all works fine, but on 4.2.3 after several thousand .persist()
calls, it ends with this exception on the client:

ERROR - Can not get connection to server. Problem establishing socket connection for InvokerLocator [socket://127.0.0.1:3873/]
org.jboss.remoting.CannotConnectException: Can not get connection to server. Problem establishing socket connection for InvokerLocator [socket://127.0.0.1:3873/]
 at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:579)
 at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
 at org.jboss.remoting.Client.invoke(Client.java:1634)
 at org.jboss.remoting.Client.invoke(Client.java:548)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:53)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:74)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:107)
 at $Proxy0.insert(Unknown Source)
 at com.qualitype.qualitrail.tools.katmigration.listener.ImportEventListener.insertRow(ImportEventListener.java:391)
 at com.qualitype.qualitrail.tools.katmigration.listener.ImportEventListener.onRowEnd(ImportEventListener.java:184)
 at com.qualitype.qualitrail.tools.katmigration.parser.ImportXmlParser.handleElementEnd(ImportXmlParser.java:116)
 at com.qualitype.qualitrail.tools.katmigration.parser.ImportXmlParser.parse(ImportXmlParser.java:76)
 at com.qualitype.qualitrail.tools.katmigration.KatClient.importXmlFile(KatClient.java:784)
 at com.qualitype.qualitrail.tools.katmigration.KatClient.start(KatClient.java:137)
 at com.qualitype.qualitrail.tools.katmigration.KatClient.main(KatClient.java:66)
Caused by: java.net.BindException: Address already in use: connect
 at java.net.PlainSocketImpl.socketConnect(Native Method)
 at java.net.PlainSocketImpl.doConnect(Unknown Source)
 at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
 at java.net.PlainSocketImpl.connect(Unknown Source)
 at java.net.SocksSocketImpl.connect(Unknown Source)
 at java.net.Socket.connect(Unknown Source)
 at org.jboss.remoting.transport.socket.SocketClientInvoker.createSocket(SocketClientInvoker.java:192)
 at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.getConnection(MicroSocketClientInvoker.java:827)
 at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:569)
 at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
 at org.jboss.remoting.Client.invoke(Client.java:1634)
 at org.jboss.remoting.Client.invoke(Client.java:548)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:53)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:74)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:107)
 at $Proxy0.insert(Unknown Source)
 at com.qualitype.qualitrail.tools.katmigration.listener.ImportEventListener.insertRow(ImportEventListener.java:391)
 at com.qualitype.qualitrail.tools.katmigration.listener.ImportEventListener.onRowEnd(ImportEventListener.java:184)
 at com.qualitype.qualitrail.tools.katmigration.parser.ImportXmlParser.handleElementEnd(ImportXmlParser.java:116)
 at com.qualitype.qualitrail.tools.katmigration.parser.ImportXmlParser.parse(ImportXmlParser.java:76)
 at com.qualitype.qualitrail.tools.katmigration.KatClient.importXmlFile(KatClient.java:784)
 at com.qualitype.qualitrail.tools.katmigration.KatClient.start(KatClient.java:137)
 at com.qualitype.qualitrail.tools.katmigration.KatClient.main(KatClient.java:66)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:74)
 ... 16 more
Time elapsed: 68 seconds

Waiting a second or two after this happens, persisting of entities is working again.
It seems, as if there is a queue getting full. This behaviour is new to me, since
I thought I don't have to take care on the time, the database needs for it's
workload. Shouldn't calls on the bean stall my client thread until the bean
finished it's work?

Switching back to jBoss 4.2.2 (and Java 1.5) it works as expected.

Can somebody please help? I'm new to the whole thing.