help!!!在配置jboss连接池后,启动jboss报错如下,不知道是什么原因?我安装的是jdbc-odbc桥.连接到sql server.dx支招!!!!

[xiezhsh]

[SQLServerPool] Starting
[SQLServerPool] XA Connection pool SQLServerPool bound to java:/SQLServerPool
[SQLServerPool] Stopped
[SQLServerPool] java.lang.NullPointerException
[SQLServerPool] at org.opentools.minerva.jdbc.xa.XAPoolDataSource.getCon
nection(XAPoolDataSource.java:165)
[SQLServerPool] at org.jboss.jdbc.XADataSourceLoader.startService(XAData
SourceLoader.java:330)
[SQLServerPool] at org.jboss.util.ServiceMBeanSupport.start(ServiceMBean
Support.java:93)
[SQLServerPool] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native M
ethod)
[SQLServerPool] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMet
hodAccessorImpl.java:39)
[SQLServerPool] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Deleg
atingMethodAccessorImpl.java:25)
[SQLServerPool] at java.lang.reflect.Method.invoke(Method.java:324)
[SQLServerPool] at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanSe
rverImpl.java:1628)
[SQLServerPool] at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanSe
rverImpl.java:1523)
[SQLServerPool] at org.jboss.util.ServiceControl.start(ServiceControl.ja
va:97)
[SQLServerPool] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native M
ethod)
[SQLServerPool] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMet
hodAccessorImpl.java:39)
[SQLServerPool] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Deleg
atingMethodAccessorImpl.java:25)
[SQLServerPool] at java.lang.reflect.Method.invoke(Method.java:324)
[SQLServerPool] at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanSe
rverImpl.java:1628)
[SQLServerPool] at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanSe
rverImpl.java:1523)
[SQLServerPool] at org.jboss.Main.<init>(Main.java:203)
[SQLServerPool] at org.jboss.Main$1.run(Main.java:107)
[SQLServerPool] at java.security.AccessController.doPrivileged(Native Me
thod)
[SQLServerPool] at org.jboss.Main.main(Main.java:103)