Exception Occurred

java.lang.Exception: sql = SELECT bdseq, gubun, title, content, sdate, edate, luserid, ldate, imgyn ,width, height, xpos, ypos, realfile, savefile, filepath FROM tu_popupnotice WHERE gubun = 'K' AND grcode = 'N000002' AND sdate <= TO_CHAR (SYSDATE, 'yyyymmdd') AND edate >= TO_CHAR (SYSDATE, 'yyyymmdd') order by bdseq asc
DatabaseExecute.executeQueryList()
DBConnectionManager.executeQuery()
" SELECT bdseq, gubun, title, content, sdate, edate, luserid, ldate, imgyn ,width, height, xpos, ypos, realfile, savefile, filepath FROM tu_popupnotice WHERE gubun = 'K' AND grcode = 'N000002' AND sdate <= TO_CHAR (SYSDATE, 'yyyymmdd') AND edate >= TO_CHAR (SYSDATE, 'yyyymmdd') order by bdseq asc "
ListSet.ListSet(conn)
null
at com.credu.homepage.MainBean.selectPopupNoticeInfo(MainBean.java:75)
at controller.homepage.MainServlet.performIndexUniv(MainServlet.java:155)
at controller.homepage.MainServlet.doPost(MainServlet.java:110)
at controller.homepage.MainServlet.doGet(MainServlet.java:54)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:420)
at org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:134)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.credu.library.filter.SetDupleCharacterEncodingFilter.doFilter(SetDupleCharacterEncodingFilter.java:116)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at com.tc.tomcat55.session.SessionValve55.tcInvoke(SessionValve55.java:63)
at com.tc.tomcat55.session.SessionValve55.invoke(SessionValve55.java:50)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:895)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)