[jboss-user] JDBC Connection close every 15 ...:( plz

Hi We are facing Connection used up every 15 minutes on We suspect the jboss server is not releasing the JDBC connection on using the close() method JBOSS 4.2.1 or 4.2.3 JDK1.5.x O/s Linux Redhat Jdbc jar : ojdbc14.jar Or am I missing any thing ? Please some body help me The code is as shown below //Oracle-ds.xml <local-tx-datasource> <jndi-name>jdbc/OrclVOISE5000</jndi-name> <connection-url>jdbc:oracle:thin:@172.16.18.22:1521:GTS22</connection-url> <driver-class>oracle.jdbc.driver.OracleDriver</driver-class> <user-name>tt_VOISE50</user-name> <password>tt_VOISE50</password> <min-pool-size>20</min-pool-size> <max-pool-size>80</max-pool-size> <blocking-timeout-millis>500</blocking-timeout-millis> <idle-timeout-minutes>1</idle-timeout-minutes> <track-statements>false</track-statements> <metadata> <type-mapping>Oracle10g</type-mapping> </metadata> </local-tx-datasource> // global Declared Variables DataSource ODS = null; WrappedConnection WCP = null; //Singleton Pattern public static synchronized public DBConnectionManager getInstance() throws Exception { if (instance == null) { instance = new DBConnectionManager(); } return instance; } //Constructer private DBConnectionManager() throws Exception { String DSNAME = InfinetUtility.getProperty("DSNAME").trim(); System.out.println("DATASOURCE JNDI NAME :===>|"+DSNAME+"|<====="); InitialContext ic = null; try { ic = new InitialContext(); ODS = (javax.sql.DataSource) ic.lookup(DSNAME); } catch (NamingException e) { e.printStackTrace();} } //fetch connection public synchronized Connection getConnection(){ Connection conn = null; Connection underlyingConn = null; OracleConnection connection= null; try { conn = ODS.getConnection(); WCP = (WrappedConnection)conn; underlyingConn = WCP.getUnderlyingConnection(); conn = (OracleConnection)underlyingConn; } catch (SQLException sqlex) { System.out.println("<<<<<<<<<<< NO CONNECTION>>>>>>>>>>>>" + sqlex.getMessage() } return conn; } //Connection close public void freeConnection(Connection con) { System.out.println("RELEASING THE USED CONNECTION TO POOL"); try { con.close(); }catch (Exception e) { e,printStackTrace(); } }