Portal uses standard JNDI pooling. For the JNDI configuration look here: http://java.sun.com/products/jndi/tutorial/ldap/connect/pool.html http://java.sun.com/products/jndi/tutorial/ldap/connect/config.html Options set in ldap_identity-config.xml and standardidentity-config.xml are mapped directly to those. You can use this to configure pooling using ExternalContext. Then you can control whatever you want for the JNDI behaviour. If you want to be sure whats the current configuration, go to "http://localhost:8080/jmx-console/" and choose "service=Module,type=LDAPConnectionContext". There under "Environment" you'll see all JNDI options used to connect to LDAP listed. Did you try playing with timeout and prefsize? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4141153#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...