You can create additional JMS hosts in the following ways:
Use the Administration Console. Open the Java Message Service component under the relevant configuration, then select the JMS Hosts component. For details, see the Sun Java System Application Server Platform Edition 8.1 2005Q2 Update 2 Administration Guide.
Use the asadmin create-jms-host command. For details, see the Sun Java System Application Server Platform Edition 8.1 2005Q2 Update 2 Reference Manual.