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org.hibernate.exception.JDBCConnectionException: Could not open connection

at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:132)

at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)

at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)

at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)

at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:221)

at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:157)

at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin(JdbcTransaction.java:67)

at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:160)

at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1426)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.hibernate.context.internal.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:352)

at com.sun.proxy.$Proxy7.beginTransaction(Unknown Source)

at service.impl.UsersDAOImpl.usersLogin(UsersDAOImpl.java:25)

at action.UsersAction.login(UsersAction.java:22)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:891)

at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1293)

at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)

at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117)

at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108)

at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1369)

at ognl.ASTMethod.getValueBody(ASTMethod.java:90)

at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)

at ognl.SimpleNode.getValue(SimpleNode.java:258)

at ognl.Ognl.getValue(Ognl.java:494)

at ognl.Ognl.getValue(Ognl.java:458)

at com.opensymphony.xwork2.ognl.OgnlUtil$2.execute(OgnlUtil.java:309)

at com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecute(OgnlUtil.java:340)

at com.opensymphony.xwork2.ognl.OgnlUtil.getValue(OgnlUtil.java:307)

at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:423)

at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:287)

at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:250)

at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)