Hi We have an application which is deployed on jboss4 and maintaining a pool of connection with Inconcert database. PFB the ds.xml file:- <no-tx-connection-factory> <jndi-name>IcJava</jndi-name> <adapter-display-name>Inconcert System Connection</adapter-display-name> <rar-name>inconcert.rar</rar-name> <connection-definition>com.wcg.framework.ra.InconcertConnectionFactory</connection-definition> <config-property name="ServerName" type="java.lang.String">optxicp</config-property> <config-property name="ServerHost" type="java.lang.String">icapp</config-property> <config-property name="ServerPort" type="java.lang.String">61071</config-property> <min-pool-size>0</min-pool-size> <!-- A seperate sub-pool is created per username logged into inconcert, and the max pool size is per sub pool --> <max-pool-size>40</max-pool-size> <blocking-timeout-millis>5000</blocking-timeout-millis> <idle-timeout-minutes>10</idle-timeout-minutes> <application-managed-security/> </no-tx-connection-factory> I am not able to understand what is the meaning of sub pool per user. I think connection pool is maintained at application level and not at user level. Much appreciate if somebody clarify my doubt. Thanks in advance, Manoj View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4221834#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...