Hi guys, I am connecting to a remote postgres(version 9.0) database using hibernate. i get following error

2011-03-08 06:48:25,695 ERROR [org.hibernate.util.JDBCExceptionReporter] (http-69.89.2.245-8080-9) FATAL: sorry, too many clients already 2011-03-08 06:48:25,695 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/JBOSSINI].[com.java.misc.feedback]] (http-69.89.2.245-8080-9) Servlet.service() for servlet com.java.misc.feedback threw exception: java.lang.NullPointerException at com.java.model.HiberEx.InsertsimpleReport(HiberEx.java:95) [:] at com.java.misc.feedback.doGet(feedback.java:87) [:] at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) [:1.0.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [:1.0.0.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:324) [:6.0.0.Final] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.0.0.Final] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [:6.0.0.Final] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) [:6.0.0.Final] at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:181) [:6.0.0.Final] at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.event(CatalinaContext.java:285) [:1.1.0.Final] at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.invoke(CatalinaContext.java:261) [:1.1.0.Final] at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:88) [:6.0.0.Final] at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:100) [:6.0.0.Final] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) [:6.0.0.Final] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [:6.0.0.Final] at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) [:6.0.0.Final] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [:6.0.0.Final] at org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.invoke(ActiveRequestResponseCacheValve.java:53) [:6.0.0.Final] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362) [:6.0.0.Final] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [:6.0.0.Final] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:654) [:6.0.0.Final] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:951) [:6.0.0.Final] at java.lang.Thread.run(Thread.java:619) [:1.6.0_21]

this my code

public void InsertfailReport(String destination, String source, String status, String timedate, String smsc, String failreason, String smsid, String message){ SessionFactory sessionFactory = new Configuration().configure("com/java/hibernate.cfg.xml").buildSessionFactory(); Session session = sessionFactory.openSession(); Transaction transaction = null;

            try {
                transaction = session.beginTransaction();
                Failreport sobj=new Failreport();
                sobj.setDestination(destination);
                sobj.setFailreason(failreason);
                sobj.setMessage(message);
                sobj.setSmsc(smsc);
                sobj.setSmsid(smsid);
                sobj.setSource(source);
                sobj.setStatus(status);
                sobj.setTimedate(timedate);
                session.save(sobj);
                transaction.commit();
            } catch (HibernateException e) {
                transaction.rollback();
                e.printStackTrace();
            } finally {
                session.close();
            }
    }


<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
		"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
		"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory name="MyFactory">
        <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
        <property name="hibernate.connection.password">xxxx</property>
        <property name="hibernate.connection.url">jdbc:postgresql://xx.xx.xx.xx:5432/smslog</property>
        <property name="hibernate.connection.username">xxxxx</property>
        <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
    	<property name="hibernate.validator.apply_to_ddl">false</property>
  		<property name="hibernate.validator.autoregister_listeners">false</property>
   		<property name="hibernate.show_sql">true</property>
   		<property name="hibernate.jdbc.batch_size">0</property>
    	  <mapping resource="com/java/model/Kannel.hbm.xml"/>
    	  <mapping resource="com/java/model/Smsc.hbm.xml"/>
    	  <mapping resource="com/java/model/Dlr.hbm.xml"/>
    	  <mapping resource="com/java/model/Routesmsc.hbm.xml"/>
    	  <mapping resource="com/java/model/Simplereport.hbm.xml"/>
    	  <mapping resource="com/java/model/Failreport.hbm.xml"/>
    </session-factory>
</hibernate-configuration>