tamizharasi periyasamy [http://community.jboss.org/people/tamizharasi.periyasamy] created the discussion "ORA-12519, TNS:no appropriate service handler found" To view the discussion, visit: http://community.jboss.org/message/619159#619159 -------------------------------------------------------------- Hi, I am trying to connect a oracle 10g server. Following is my Oracle ds entry <local-tx-datasource>     <jndi-name>dnbame</jndi-name> <use-java-context>false</use-java-context>     <connection-url>jdbc:oracle:thin:@...................:XE</connection-url>     <driver-class>oracle.jdbc.driver.OracleDriver</driver-class>     <user-name>....</user-name>     <password>...</password>         <min-pool-size>5</min-pool-size>         <max-pool-size>50</max-pool-size>         <idle-timeout-minutes>5</idle-timeout-minutes>          <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>         <metadata>             <type-mapping>OracleXE</type-mapping>         </metadata>   </local-tx-datasource> I am able to make connection and fetch the data. But it throws the warning like 10:15:14,523 WARN  [JBossManagedConnectionPool] Unable to fill pool org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (java.sql.SQLException: Listener refused the connection with the following error: ORA-12519, TNS:no appropriate service handler found The Connection descriptor used by the client was: ...................:XE )     at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:190)     at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.createConnectionEventListener(InternalManagedConnectionPool.java:584)     at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.fillToMin(InternalManagedConnectionPool.java:531)     at org.jboss.resource.connectionmanager.PoolFiller.run(PoolFiller.java:74)     at java.lang.Thread.run(Unknown Source) Could any one tell me why I am getting this error and how to solve this issue? -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/619159#619159] Start a new discussion in JNDI and Naming at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]