10g管理器的打不开，怎么处理？
報錯：
500 Internal Server Error
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:393)
at oracle.sysman.emSDK.svc.conn.FGAConnectionCache.getFGAConnection(FGAConnectionCache.java:182)
at oracle.sysman.emSDK.svc.conn.ConnectionService.getConnection(ConnectionService.java:289)
at oracle.sysman.emSDK.svc.conn.ConnectionService.getConnection(ConnectionService.java:261)
at oracle.sysman.eml.creds.CredsUtil.getCreds(CredsUtil.java:1154)
at oracle.sysman.eml.creds.CredsUtil.loadCreds(CredsUtil.java:1244)
at oracle.sysman.emSDK.creds.CredsBean.loadCreds(CredsBean.java:552)
at oracle.sysman.emSDK.creds.DBCredsBean.loadCreds(DBCredsBean.java:260)
at oracle.sysman.emSDK.creds.DBComboCredsBean.loadCreds(DBComboCredsBean.java:210)
at oracle.sysman.emSDK.creds.CredsBean.initCreds(CredsBean.java:120)
at oracle.sysman.emSDK.creds.DBCredsBean.initCreds(DBCredsBean.java:91)
at oracle.sysman.db.adm.inst.ChangeStateController.getChangeStateObject(ChangeStateController.java:396)
at oracle.sysman.db.adm.inst.ChangeStateController.getBean(ChangeStateController.java:353)
at oracle.sysman.db.adm.inst.ChangeStateController.getOperationsPage(ChangeStateController.java:170)
at oracle.sysman.db.adm.inst.ChangeStateController.getDefaultPage(ChangeStateController.java:294)
at oracle.sysman.db.adm.inst.ChangeStateController.onEvent(ChangeStateController.java:448)
at oracle.sysman.db.adm.DBController.handleEvent(DBController.java:2166)
at oracle.sysman.emSDK.svlt.PageHandler.handleRequest(PageHandler.java:376)
at oracle.sysman.db.adm.DBControllerResolver.handleRequest(DBControllerResolver.java:115)
at oracle.sysman.emSDK.svlt.EMServlet.myDoGet(EMServlet.java:688)
at oracle.sysman.emSDK.svlt.EMServlet.doGet(EMServlet.java:291)
at oracle.sysman.eml.app.Console.doGet(Console.java:135)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
at oracle.sysman.emSDK.svlt.EMRedirectFilter.doFilter(EMRedirectFilter.java:101)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:16)
at oracle.sysman.db.adm.inst.HandleRepDownFilter.doFilter(HandleRepDownFilter.java:104)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
at oracle.sysman.eml.app.ContextInitFilter.doFilter(ContextInitFilter.java:239)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:600)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
at java.lang.Thread.run(Thread.java:534)
