Hi All .. I am using Jboss Level connection pooling in my application ... my oracle-ds.xml reads as : <min-pool-size>10</min-pool-size> | <max-pool-size>500</max-pool-size> | <max-idle-timeout>0</max-idle-timeout> | <blocking-timeout-millis>30000</blocking-timeout-millis> | <idle-timeout-minutes>15</idle-timeout-minutes> I am connecting with oracle 10g express database . Now when i send 10 request @ 0.1 seconds i.e. 100 request per second .... to my exception after some requests following exception occurs : | [CachedConnectionManager] Closing a connection for you. Please close them yourself: org.jboss.resource.adapter.jdbc.WrappedConnection@1e8bf76 | java.lang.Throwable: STACKTRACE | at org.jboss.resource.connectionmanager.CachedConnectionManager.registerConnection(CachedConnectionManager.java:290) | at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:417) | at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:842) | at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:88) Help me out .. how to handle this .. do i need some other pooling mechanism ? Regards , Jasdeep ???? ?? ???? ???? , ??? ???? ???? ??? ??? | ???? '??? ????? ?? ??? ???? ?? ?? ?? | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4047804#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...