Error page jsp1

An error occured in the bean. Error Message is: connection is closed
Stack Trace is :

 java.lang.IllegalStateException: connection is closed
	at com.caucho.sql.UserConnectionAdapter.getConnection(UserConnectionAdapter.java:121)
	at com.caucho.sql.UserConnectionAdapter.prepareStatement(UserConnectionAdapter.java:387)
	at com.whx.dao.CsszDao.find(CsszDao.java:149)
	at _6._app._login3__jsp._jspService(_login3__jsp.java:40)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:75)
	at com.caucho.jsp.Page.subservice(Page.java:506)
	at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:182)
	at com.tools.CharSet.doFilter(CharSet.java:31)
	at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
	at com.caucho.server.http.Invocation.service(Invocation.java:315)
	at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
	at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:253)
	at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:170)
	at com.caucho.server.TcpConnection.run(TcpConnection.java:139)
	at java.lang.Thread.run(Thread.java:619)