TONGWEB+JSP+ORACLE环境,ORACLE双网卡,连接不稳定,请教:

Error: 500
Location: /Endow/demand_search_do.jsp
Internal Servlet Error:java.lang.NullPointerException
at demand_search_do_9._jspService(demand_search_do_9:209)
at com.tongweb.webrun.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.tongweb.webbase.facade.ServletHandler.doService(ServletHandler.java:532)
at com.tongweb.webbase.core.Handler.invoke(Handler.java:322)
at com.tongweb.webbase.core.Handler.service(Handler.java:235)
at com.tongweb.webbase.facade.ServletHandler.service(ServletHandler.java:464)
at com.tongweb.webbase.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:245)
at com.tongweb.webbase.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:95)
at com.tongweb.webbase.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:185)
at java.security.AccessController.doPrivileged(Native Method)
at com.tongweb.webbase.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:181)
at com.smices.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:121)
at com.tongweb.webbase.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:220)
at com.tongweb.webbase.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:95)
at com.tongweb.webbase.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:185)
at java.security.AccessController.doPrivileged(Native Method)
at com.tongweb.webbase.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:181)
at com.tongweb.webbase.core.ApplicationFilterChain.wrappedDoFilter(ApplicationFilterChain.java:160)
at com.tongweb.webbase.core.ContextManager.internalService(ContextManager.java:959)
at com.tongweb.webbase.core.ContextManager.service(ContextManager.java:837)
at com.tongweb.webbase.startup.TabascoAdapter.service(TabascoAdapter.java:299)
at com.tongweb.servlet.servletManager.ServletManager.service(ServletManager.java:805)
at com.tongweb.servlet.connectionMethods.http.HttpHandler.doARequest(HttpHandler.java:280)
at com.tongweb.servlet.connectionMethods.http.HttpHandler.processRequests(HttpHandler.java:300)
at com.tongweb.servlet.connectionMethods.http.HttpHandler.run(HttpHandler.java:76)
at java.lang.Thread.run(Thread.java:534)