Error 500 and also getting an ISAPI error.

Question

Description of the Problem/Question:
Here is the error message we are seeing in the extended logging on the webserver. We can replicate in our test
environment and this log is from the test region. It throws an error 500, ISAPI error to the user.
Here are the log entries from wlacess.log on cssna105. I tried to search for the root cause without any success.
At some point, some one was saying to set the KeepAlive value to off. It is recommended to set to ON in performance guide.
Ct claims, small size of the messaging is getting through and some with larger size is getting this errors.
wlacess.log:
<79241247502601228> SSL is not being used
Mon Jul 13 12:30:01 2009 <79241247502601228> resolveRequest: wlforward: /
Mon Jul 13 12:30:01 2009 <79241247502601228> URI is /, len=1
Mon Jul 13 12:30:01 2009 <79241247502601228> Request URI = []
Mon Jul 13 12:30:01 2009 <79241247502601228> attempt #0 out of a max of 5
Mon Jul 13 12:30:01 2009 <79241247502601228> Trying a pooled connection for 'XXXXXX/9100/9100'
Mon Jul 13 12:30:01 2009 <79241247502601228> got pooled connection to server 'XXXXXXX/9100/9100' from general list for '/', Local port: 1318
Mon Jul 13 12:30:01 2009 <79241247502601228> WLS info in sendRequest: XXXXXXX:9100 recycled? 1
Mon Jul 13 12:30:01 2009 <79241247502601228> URL::parseHeaders: CompleteStatusLine set to http://HTTP/1.1 200 OK
Mon Jul 13 12:30:01 2009 <79241247502601228> URL::parseHeaders: StatusLine set to 200 OK
Mon Jul 13 12:30:01 2009 <79241247502601228> parsed all headers OK
Mon Jul 13 12:30:01 2009 <79241247502601228> sendResponse() : uref->getStatus() = '200'
Mon Jul 13 12:30:01 2009 <79241247502601228> Going to send headers to the client. Status :200 OK
Mon Jul 13 12:30:01 2009 <79241247502601228> Content Length = 1573
Mon Jul 13 12:30:01 2009 <79241247502601228> canRecycle: conn=1 status=200 isKA=1 clen=1573 isCTE=0
Mon Jul 13 12:30:01 2009 <79241247502601228> closeConn: pooling for 'XXXXXX/9100'
Mon Jul 13 12:30:01 2009 <79241247502601228> request [] processed successfully ..................
Mon Jul 13 12:30:02 2009 <79241247502598226> URL::parseHeaders: CompleteStatusLine set to http://HTTP/1.1 200 OK
Mon Jul 13 12:30:02 2009 <79241247502598226> URL::parseHeaders: StatusLine set to 200 OK
Mon Jul 13 12:30:02 2009 <79241247502598226> parsed all headers OK
Mon Jul 13 12:30:02 2009 <79241247502598226> sendResponse() : uref->getStatus() = '200'
Mon Jul 13 12:30:02 2009 <79241247502598226> Going to send headers to the client. Status :200 OK
Mon Jul 13 12:30:02 2009 <79241247502598226> Content Length Unknown
Mon Jul 13 12:30:02 2009 <79241247502598226> *******Exception type READ_ERROR_FROM_SERVER (socket read failure) raised at line 207 of ..\nsapi\.\Reader.cpp
Mon Jul 13 12:30:02 2009 <79241247502598226> got exception in sendResponse phase: READ_ERROR_FROM_SERVER http://os error=0, line 207 of ..\nsapi\.\Reader.cpp: socket read failure at line 1043
Mon Jul 13 12:30:02 2009 <79241247502598226> NOT failing over after sendResponse() exception: READ_ERROR_FROM_SERVER
Mon Jul 13 12:30:02 2009 <79241247502598226> request [PSIGW/HttpListeningConnector] did NOT process successfully ..................
Mon Jul 13 12:30:03 2009 <79241247502603229>
and
from JAVA STACK TRACE, any thoughts for the cause...
POID:52482812] [UserId:USDW] [Message:Connection to PeopleSoft failed. Response returned: HTTP/1.1 500 Internal Server ErrorConnection: closeDate: Fri, 10 Jul 2009 15:06:54 GMTServer: Microsoft-IIS/6.0X-Powered-By: ASP.NETContent-Type: text/html<TITLE>ISAPI plug-in Error Message</TITLE><H2>Message from the ISAPI plugin:</H2><P><PRE>Internal Server failure, ISAPI plugin. Cannot continue.</PRE><HR><I>Build date/time: Mar 19 2009<I><P><HR><B>Change Number:</B> <I>1203144<BR>] [Cause:null] [Stack Trace]

Answer 1

Sonia Amin wrote:
Hello,
>
> Kindly do the following and see if it works:
>
> 1.Stop Tomcat
> 2. Deleted the content within the localhost of work directory inside tomcat folder. ( ex. folders under \installation drive\Business Objects\Tomcat6\work\Catalina\localhost)
> 3. Restart the tomcat.
> 4. Wait till the localhost folder is repopulated.
>
> Try the link now.
>
> Regards
> Sonia
Hi Sonia,
Just tested the suggested steps, but alas - same error.
Regards,