How lesson_status field in ota_performances is complete?

one person play the course the result lesson_status is complete
another person play the same course the result is Incomplete
CAN anyone tell me why or the logic that the lesson_status is updated?
urgent urgent please help!!!!

basic: Applet made visible
basic: Starting applet
basic: completed perf rollup
basic: Applet started
basic: Told clients applet is started
Message logging enabled.
LMS helper class: oracle.apps.ota.lms.LMSJava2Helper
Message logging enabled.
*** LMSInitialize("") [Mon May 07 21:19:50 CST 2012]
LMS_URL found in query string.
LMS_URL set to: http://ccbm.ccdi.com.cn:8000/OA_HTML/OA.jsp?page=/oracle/apps/ota/player/webui/PlayerLmsApiRN&addBreadCrumb=S&OALAF=oaText&transactionid=1115922800&oapc=10&oas=EEl3umyBxrExVTQzZlOgYA..
Applet codebase: http://10.1.9.109:8888/contentstorage/SCORM_Adapter/
Request:
action=GetAttemptState
End of Request
network: 正在使用代理 DIRECT 连接 http://ccbm.ccdi.com.cn:8000/OA_HTML/OA.jsp?page=/oracle/apps/ota/player/webui/PlayerLmsApiRN&addBreadCrumb=S&OALAF=oaText&transactionid=1115922800&oapc=10&oas=EEl3umyBxrExVTQzZlOgYA..
network: 正在使用代理 DIRECT 连接 http://ccbm.ccdi.com.cn:8000/
network: 正在连接 http://ccbm.ccdi.com.cn:8000/OA_HTML/OA.jsp?page=/oracle/apps/ota/player/webui/PlayerLmsApiRN&addBreadCrumb=S&OALAF=oaText&transactionid=1115922800&oapc=10&oas=EEl3umyBxrExVTQzZlOgYA.. 与 cookie "JSESSIONID=be22abf12bdf8eab60ced859d533b53391b19d870a28ce8e0f0526fd997b2161.e34Pa3mMb3eLb40LaN8MbNuTbh4Le0; OHS-ccbm.ccdi.com.cn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oracle.uix=0^^GMT+8:00^p; PROD=sU22zEeJKQdI2MqRQ3XKkj9K:S"
network: 服务器 http://ccbm.ccdi.com.cn:8000/OA_HTML/OA.jsp?page=/oracle/apps/ota/player/webui/PlayerLmsApiRN&addBreadCrumb=S&OALAF=oaText&transactionid=1115922800&oapc=10&oas=EEl3umyBxrExVTQzZlOgYA.. 请求用 "JSESSIONID=d07a1a1eff8b7b8f55819d968b088aaad7bc6d10d1b6cdb42aa30ded6ff06593.e34QbNeKaNaLa40Lb3uSch8Nc3eTe0; path=/OA_HTML" 执行 set-cookie
Reply:
<html lang="en-US">
<head>
<script>
function ignoreWarnAboutChanges(url)
document.location.href = url;
</script>
<style type="text/css">
.globalHeader {
background: url(/OA_HTML/cabo/images/swan/headerBg.jpg);
background-repeat:repeat-x;background-color:#1963a9
.globalLink {white-space:nowrap;font-size:9pt;font-family:Arial;color:#ffffff;text-decoration:none}
.pageLink A:link {color:#2b7c92}
.copyright {white-space:nowrap;font-family:Arial;font-size:7.5pt;color:#ffffff;text-decoration:none}
.errorHeader {
color:#ed1c24;
font-family:Arial;
font-weight:bold;
font-size:9pt;
vertical-align:middle;
border-bottom-width:1px;
border-bottom-style:solid;
border-bottom-color:#3a5a87;
margin-bottom:0px;
.errorText {
font-family:Tahoma,Arial,Helvetica,Geneva,sans-serif;
font-size:9pt;
</style>
<title>Error Page</title>
<META name="fwk-error" content="Error occured while processing the request">
<META name="fwk-error-detail" content="oracle.apps.fnd.framework.OAException%3A+java.lang.NullPointerException%0A%09at+oracle.apps.fnd.framework.OAException.wrapperException(OAException.java%3A912)%0A%09at+oracle.apps.fnd.framework.webui.OAPageErrorHandler.prepareException(OAPageErrorHandler.java%3A1169)%0A%09at+oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java%3A3241)%0A%09at+oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java%3A3036)%0A%09at+_OA._jspService(_OA.java%3A228)%0A%09at+com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java%3A59)%0A%09at+oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java%3A379)%0A%09at+oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java%3A594)%0A%09at+oracle.jsp.runtimev2.JspServlet.service(JspServlet.java%3A518)%0A%09at+javax.servlet.http.HttpServlet.service(HttpServlet.java%3A856)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java%3A713)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java%3A370)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.unprivileged_forward(ServletRequestDispatcher.java%3A259)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.access%24100(ServletRequestDispatcher.java%3A51)%0A%09at+com.evermind.server.http.ServletRequestDispatcher%242.oc4jRun(ServletRequestDispatcher.java%3A193)%0A%09at+oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java%3A284)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java%3A198)%0A%09at+com.evermind.server.http.EvermindPageContext.forward(EvermindPageContext.java%3A395)%0A%09at+_OA._jspService(_OA.java%3A221)%0A%09at+com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java%3A59)%0A%09at+oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java%3A379)%0A%09at+oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java%3A594)%0A%09at+oracle.jsp.runtimev2.JspServlet.service(JspServlet.java%3A518)%0A%09at+javax.servlet.http.HttpServlet.service(HttpServlet.java%3A856)%0A%09at+com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java%3A64)%0A%09at+oracle.apps.jtf.base.session.ReleaseResFilter.doFilter(ReleaseResFilter.java%3A26)%0A%09at+com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java%3A15)%0A%09at+oracle.apps.fnd.security.AppsServletFilter.doFilter(AppsServletFilter.java%3A318)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java%3A621)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java%3A370)%0A%09at+com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java%3A871)%0A%09at+com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java%3A453)%0A%09at+com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java%3A313)%0A%09at+com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java%3A199)%0A%09at+oracle.oc4j.network.ServerSocketReadHandler%24SafeRunnable.run(ServerSocketReadHandler.java%3A260)%0A%09at+oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java%3A234)%0A%09at+oracle.oc4j.network.ServerSocketAcceptHandler.access%24700(ServerSocketAcceptHandler.java%3A29)%0A%09at+oracle.oc4j.network.ServerSocketAcceptHandler%24AcceptHandlerHorse.run(ServerSocketAcceptHandler.java%3A879)%0A%09at+com.evermind.util.ReleasableResourcePooledExecutor%24MyWorker.run(ReleasableResourcePooledExecutor.java%3A303)%0A%09at+java.lang.Thread.run(Thread.java%3A619)%0A%23%23+Detail+0+%23%23%0Ajava.lang.NullPointerException%0Ajava.lang.NullPointerException%0A">
</head>
<body>
<table width="100%" border="0" cellspacing="0" cellpadding="0" style="margin-left:5px;margin-right:5px">
<tr>
<td> <h1 class="errorHeader"> Error Page </h1> </td>
</tr>
<tr valign="top">
<td class="errorText" >You have encountered an unexpected error. Please contact the System Administrator for assistance. </td>
</tr>
<tr>
<td style="padding-bottom:15px" class="errorText"> Click <span class="pageLink">here</span> for exception details. </td>
</tr>
<tr>
<td style="padding-bottom:25px" class="errorText">
<span class="pageLink"> About Previous Page</span>
</td>
</tr>
</table>
<table cellpadding="0" cellspacing="0" border="0" width="100%"
style="background-image:url(/OA_HTML/cabo/images/swan/footerBg.gif);">
<tr>
<td nowrap align="center">
<table cellpadding="0" cellspacing="0" border="0" align="center">
<tr>
<td>Logout</td>
</tr>
</table>
</td>
</tr>
<tr>
<td>
<table cellpadding="2" cellspacing="2" border="0" width="100%">
<tr>
<td align="right" nowrap width="100%" class="copyright">
Copyright (c) 2006, Oracle. All rights reserved.
</td>
</tr>
</table>
</td>
</tr>
</table>
<script>document.body.style.marginLeft="0px";document.body.style.marginRight="0px";document.body.style.marginTop="0px";</script>
</body>
</html>
End of Reply
LMS Error: 303 - Communication exception
Error diagnostic: No error code entry found in LMS response. Please report this error to the OLM administrator.
Error stack trace:
oracle.apps.ota.lms.LMSException: No error code entry found in LMS response. Please report this error to the OLM administrator.
     at oracle.apps.ota.lms.LMSHelper.sendRequest(LMSHelper.java:176)
     at oracle.apps.ota.lms.LMSApplet.sendRequest(LMSApplet.java:1123)
     at oracle.apps.ota.lms.LMSApplet.getAttemptState(LMSApplet.java:703)
     at oracle.apps.ota.lms.LMSApplet.checkNotFinished(LMSApplet.java:663)
     at oracle.apps.ota.lms.LMSApplet.LMSInitialize(LMSApplet.java:145)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at sun.plugin.javascript.JSInvoke.invoke(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
     at sun.plugin2.liveconnect.JavaClass$MethodInfo.invoke(Unknown Source)
     at sun.plugin2.liveconnect.JavaClass$MemberBundle.invoke(Unknown Source)
     at sun.plugin2.liveconnect.JavaClass.invoke0(Unknown Source)
     at sun.plugin2.liveconnect.JavaClass.invoke(Unknown Source)
     at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$DefaultInvocationDelegate.invoke(Unknown Source)
     at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$3.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo.doObjectOp(Unknown Source)
     at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$LiveConnectWorker.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Returned: "false"
*** LMSGetValue("cmi.suspend_data") [Mon May 07 21:20:07 CST 2012]
Request:
action=GetAttemptState
End of Request
network: 正在使用代理 DIRECT 连接 http://ccbm.ccdi.com.cn:8000/OA_HTML/OA.jsp?page=/oracle/apps/ota/player/webui/PlayerLmsApiRN&addBreadCrumb=S&OALAF=oaText&transactionid=1115922800&oapc=10&oas=EEl3umyBxrExVTQzZlOgYA..
network: 正在连接 http://ccbm.ccdi.com.cn:8000/OA_HTML/OA.jsp?page=/oracle/apps/ota/player/webui/PlayerLmsApiRN&addBreadCrumb=S&OALAF=oaText&transactionid=1115922800&oapc=10&oas=EEl3umyBxrExVTQzZlOgYA.. 与 cookie "JSESSIONID=d07a1a1eff8b7b8f55819d968b088aaad7bc6d10d1b6cdb42aa30ded6ff06593.e34QbNeKaNaLa40Lb3uSch8Nc3eTe0; OHS-ccbm.ccdi.com.cn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oracle.uix=0^^GMT+8:00^p; PROD=sU22zEeJKQdI2MqRQ3XKkj9K:S"
network: 服务器 http://ccbm.ccdi.com.cn:8000/OA_HTML/OA.jsp?page=/oracle/apps/ota/player/webui/PlayerLmsApiRN&addBreadCrumb=S&OALAF=oaText&transactionid=1115922800&oapc=10&oas=EEl3umyBxrExVTQzZlOgYA.. 请求用 "JSESSIONID=d07a1a1eff8b7b8f55819d968b088aaad7bc6d10d1b6cdb42aa30ded6ff06593.e34QbNeKaNaLa40Lb3uSch8Nc3eTe0; path=/OA_HTML" 执行 set-cookie
Reply:
<html lang="en-US">
<head>
<script>
function ignoreWarnAboutChanges(url)
document.location.href = url;
</script>
<style type="text/css">
.globalHeader {
background: url(/OA_HTML/cabo/images/swan/headerBg.jpg);
background-repeat:repeat-x;background-color:#1963a9
.globalLink {white-space:nowrap;font-size:9pt;font-family:Arial;color:#ffffff;text-decoration:none}
.pageLink A:link {color:#2b7c92}
.copyright {white-space:nowrap;font-family:Arial;font-size:7.5pt;color:#ffffff;text-decoration:none}
.errorHeader {
color:#ed1c24;
font-family:Arial;
font-weight:bold;
font-size:9pt;
vertical-align:middle;
border-bottom-width:1px;
border-bottom-style:solid;
border-bottom-color:#3a5a87;
margin-bottom:0px;
.errorText {
font-family:Tahoma,Arial,Helvetica,Geneva,sans-serif;
font-size:9pt;
</style>
<title>Error Page</title>
<META name="fwk-error" content="Error occured while processing the request">
<META name="fwk-error-detail" content="oracle.apps.fnd.framework.OAException%3A+java.lang.NullPointerException%0A%09at+oracle.apps.fnd.framework.OAException.wrapperException(OAException.java%3A912)%0A%09at+oracle.apps.fnd.framework.webui.OAPageErrorHandler.prepareException(OAPageErrorHandler.java%3A1169)%0A%09at+oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java%3A3241)%0A%09at+oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java%3A3036)%0A%09at+_OA._jspService(_OA.java%3A228)%0A%09at+com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java%3A59)%0A%09at+oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java%3A379)%0A%09at+oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java%3A594)%0A%09at+oracle.jsp.runtimev2.JspServlet.service(JspServlet.java%3A518)%0A%09at+javax.servlet.http.HttpServlet.service(HttpServlet.java%3A856)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java%3A713)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java%3A370)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.unprivileged_forward(ServletRequestDispatcher.java%3A259)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.access%24100(ServletRequestDispatcher.java%3A51)%0A%09at+com.evermind.server.http.ServletRequestDispatcher%242.oc4jRun(ServletRequestDispatcher.java%3A193)%0A%09at+oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java%3A284)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java%3A198)%0A%09at+com.evermind.server.http.EvermindPageContext.forward(EvermindPageContext.java%3A395)%0A%09at+_OA._jspService(_OA.java%3A221)%0A%09at+com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java%3A59)%0A%09at+oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java%3A379)%0A%09at+oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java%3A594)%0A%09at+oracle.jsp.runtimev2.JspServlet.service(JspServlet.java%3A518)%0A%09at+javax.servlet.http.HttpServlet.service(HttpServlet.java%3A856)%0A%09at+com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java%3A64)%0A%09at+oracle.apps.jtf.base.session.ReleaseResFilter.doFilter(ReleaseResFilter.java%3A26)%0A%09at+com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java%3A15)%0A%09at+oracle.apps.fnd.security.AppsServletFilter.doFilter(AppsServletFilter.java%3A318)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java%3A621)%0A%09at+com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java%3A370)%0A%09at+com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java%3A871)%0A%09at+com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java%3A453)%0A%09at+com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java%3A313)%0A%09at+com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java%3A199)%0A%09at+oracle.oc4j.network.ServerSocketReadHandler%24SafeRunnable.run(ServerSocketReadHandler.java%3A260)%0A%09at+com.evermind.util.ReleasableResourcePooledExecutor%24MyWorker.run(ReleasableResourcePooledExecutor.java%3A303)%0A%09at+java.lang.Thread.run(Thread.java%3A619)%0A%23%23+Detail+0+%23%23%0Ajava.lang.NullPointerException%0Ajava.lang.NullPointerException%0A">
</head>
<body>
<table width="100%" border="0" cellspacing="0" cellpadding="0" style="margin-left:5px;margin-right:5px">
<tr>
<td> <h1 class="errorHeader"> Error Page </h1> </td>
</tr>
<tr valign="top">
<td class="errorText" >You have encountered an unexpected error. Please contact the System Administrator for assistance. </td>
</tr>
<tr>
<td style="padding-bottom:15px" class="errorText"> Click <span class="pageLink">here</span> for exception details. </td>
</tr>
<tr>
<td style="padding-bottom:25px" class="errorText">
<span class="pageLink"> About Previous Page</span>
</td>
</tr>
</table>
<table cellpadding="0" cellspacing="0" border="0" width="100%"
style="background-image:url(/OA_HTML/cabo/images/swan/footerBg.gif);">
<tr>
<td nowrap align="center">
<table cellpadding="0" cellspacing="0" border="0" align="center">
<tr>
<td>Logout</td>
</tr>
</table>
</td>
</tr>
<tr>
<td>
<table cellpadding="2" cellspacing="2" border="0" width="100%">
<tr>
<td align="right" nowrap width="100%" class="copyright">
Copyright (c) 2006, Oracle. All rights reserved.
</td>
</tr>
</table>
</td>
</tr>
</table>
<script>document.body.style.marginLeft="0px";document.body.style.marginRight="0px";document.body.style.marginTop="0px";</script>
</body>
</html>
End of Reply
LMS Error: 303 - Communication exception
Error diagnostic: No error code entry found in LMS response. Please report this error to the OLM administrator.
Error stack trace:
oracle.apps.ota.lms.LMSException: No error code entry found in LMS response. Please report this error to the OLM administrator.
     at oracle.apps.ota.lms.LMSHelper.sendRequest(LMSHelper.java:176)
     at oracle.apps.ota.lms.LMSApplet.sendRequest(LMSApplet.java:1123)
     at oracle.apps.ota.lms.LMSApplet.getAttemptState(LMSApplet.java:703)
     at oracle.apps.ota.lms.LMSApplet.checkInitialized(LMSApplet.java:639)
     at oracle.apps.ota.lms.LMSApplet.checkOpen(LMSApplet.java:675)
     at oracle.apps.ota.lms.LMSApplet.LMSGetValue(LMSApplet.java:190)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at sun.plugin.javascript.JSInvoke.invoke(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
     at sun.plugin2.liveconnect.JavaClass$MethodInfo.invoke(Unknown Source)
     at sun.plugin2.liveconnect.JavaClass$MemberBundle.invoke(Unknown Source)
     at sun.plugin2.liveconnect.JavaClass.invoke0(Unknown Source)
     at sun.plugin2.liveconnect.JavaClass.invoke(Unknown Source)
     at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$DefaultInvocationDelegate.invoke(Unknown Source)
     at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$3.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo.doObjectOp(Unknown Source)
     at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$LiveConnectWorker.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Returned: ""
please help me analyse the causes ?? thanks

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