Reg:Update Query is Not Working

[ramakrishna rayudu]

hi..
i am connecting to MySql DataBase..

and when i am executing the update Query i am getting the this exception..
we have installed new database from then i am getting this problem..
is it the problem with database installation..
or there is some thing withe the DataBase Query???

00:30:58,690 WARN [TxConnectionManager] Connection error occured: org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener@6177b08[state=NORMAL mc=org.jboss.resource.adapter.jdbc.xa.XAManagedConnection@34da965f handles=1 lastUse=1302582657540 permit=true trackByTx=true mcp=org.jboss.resource.connectionmanager.JBossManagedConnectionPool$OnePool@7ac65214 context=org.jboss.resource.connectionmanager.InternalManagedConnectionPool@7236de04 xaResource=org.jboss.resource.connectionmanager.xa.JcaXAResourceWrapper@6f8e4d57 txSync=null]
com.mysql.jdbc.CommunicationsException: Communications link failure

Last packet sent to the server was 127 ms ago.
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1070)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2985)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2871)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3414)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2542)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1734)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:995)
at com.mysql.jdbc.CallableStatement.execute(CallableStatement.java:859)
at com.mysql.jdbc.jdbc2.optional.PreparedStatementWrapper.execute(PreparedStatementWrapper.java:821)
at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.execute(WrappedPreparedStatement.java:209)
at com.gtm.cm2.dbutils.DBUtils.execute(DBUtils.java:476)
at com.gtm.cm2.dao.DefaultListDAO.updateGroupListDataCount(DefaultListDAO.java:3713)
at com.gtm.cm2.lists.ListManagerBean.createGroups(ListManagerBean.java:686)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at org.jboss.invocation.Invocation.performCall(Invocation.java:359)
at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:237)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:169)
at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:168)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138)
at org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:648)
at org.jboss.ejb.Container.invoke(Container.java:960)
at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:430)
at org.jboss.ejb.plugins.local.StatelessSessionProxy.invoke(StatelessSessionProxy.java:103)
at $Proxy140.createGroups(Unknown Source)
at com.gtm.cm2.services.delegate.ListManagerDelegate.createGroups(ListManagerDelegate.java:351)
at com.gtm.cm2.actions.ListAction.createGroup(ListAction.java:1936)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:266)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:167)
at com.gtm.cm2.common.BaseAction.execute(BaseAction.java:84