"timfox" wrote : I've just been informed by the remoting team that the attributes need "isParam=true" to ensure they're passed to the client side. Hi Everybody ... We also got the same exception .We are using JBoss 1.0.1.GA (Prod Environment -not possible to upgrade to latest JBM). There are around 30 machines which are communicating with Central machine thru JBoss Messaging. Every machine is working correctly ,but after sometime all machines hangs up and the exception i got is given below..... | Exception Cause --> org.jboss.jms.client.container.ExceptionInterceptor(javax.jms.IllegalStateException: Can not get connection to server. Problem establishing socket connection for locator - InvokerLocator [socket://10.0.34.12:4457/?dataType=jms&marshaller=org.jboss.jms.server.remoting.JMSWireFormat&serializationtype=jboss&socket.check_connection=false&unmarshaller=org.jboss.jms.server.remoting.JMSWireFormat]) | Exception Cause --> org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404(javax.jms.IllegalStateException: Can not get connection to server. Problem establishing socket connection for locator - InvokerLocator [socket://10.0.34.12:4457/?dataType=jms&marshaller=org.jboss.jms.server.remoting.JMSWireFormat&serializationtype=jboss&socket.check_connection=false&unmarshaller=org.jboss.jms.server.remoting.JMSWireFormat]) | Exception Cause --> org.jboss.jms.client.container.ClientLogInterceptor(javax.jms.IllegalStateException: Can not get connection to server. Problem establishing socket connection for locator - InvokerLocator [socket://10.0.34.12:4457/?dataType=jms&marshaller=org.jboss.jms.server.remoting.JMSWireFormat&serializationtype=jboss&socket.check_connection=false&unmarshaller=org.jboss.jms.server.remoting.JMSWireFormat]) | Exception Cause --> org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404(javax.jms.IllegalStateException: Can not get connection to server. Problem establishing socket connection for locator - InvokerLocator [socket://10.0.34.12:4457/?dataType=jms&marshaller=org.jboss.jms.server.remoting.JMSWireFormat&serializationtype=jboss&socket.check_connection=false&unmarshaller=org.jboss.jms.server.remoting.JMSWireFormat]) | Exception Cause --> org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate(javax.jms.IllegalStateException: Can not get connection to server. Problem establishing socket connection for locator - InvokerLocator [socket://10.0.34.12:4457/?dataType=jms&marshaller=org.jboss.jms.server.remoting.JMSWireFormat&serializationtype=jboss&socket.check_connection=false&unmarshaller=org.jboss.jms.server.remoting.JMSWireFormat]) | Exception Cause --> org.jboss.jms.client.JBossConnectionFactory(javax.jms.IllegalStateException: Can not get connection to server. Problem establishing socket connection for locator - InvokerLocator [socket://10.0.34.12:4457/?dataType=jms&marshaller=org.jboss.jms.server.remoting.JMSWireFormat&serializationtype=jboss&socket.check_connection=false&unmarshaller=org.jboss.jms.server.remoting.JMSWireFormat]) | Exception Cause --> org.jboss.jms.client.JBossConnectionFactory(javax.jms.IllegalStateException: Can not get connection to server. Problem establishing socket connection for locator - InvokerLocator [socket://10.0.34.12:4457/?dataType=jms&marshaller=org.jboss.jms.server.remoting.JMSWireFormat&serializationtype=jboss&socket.check_connection=false&unmarshaller=org.jboss.jms.server.remoting.JMSWireFormat]) | ##################################################################################################### | Messaging Code Related Exceptions | Exception Occured | Exception Cause --> javax.jms.IllegalStateException: Can not get connection to server. Problem establishing socket connection for locator - InvokerLocator [socket://10.0.34.12:4457/?dataType=jms&marshaller=org.jboss.jms.server.remoting.JMSWireFormat&serializationtype=jboss&socket.check_connection=false&unmarshaller=org.jboss.jms.server.remoting.JMSWireFormat] | File Name : ConnectionForSender.java | Class Name : com.tcs.retail.framework.messaging.lookup.ConnectionForSender | Method Name : getConnection | Line No : 32 | | ##################################################################################################### | | | To overcome this exception , i will change the setting for numberofretries and clientmaxpoolsize. In addtion to that there are some config details available in the specified quote attached with this message. Tim , can you kindly tell me where this configuration changes needs to be done (file name and correct place) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4089648#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...