1455372 - Cannot access Infoview or CMC on Tomcat after server maintenance

Users cannot access Infoview or CMC after server maintenance

•        When started from CCM or Tomcat configuation manager, Tomcat shows as started successfully
• Some recommended Windows patches were installed as part of maintenance
• Infoviewapp, cmcapp and even Tomcat's welcome page fail to load without showing any errors
• On Taskmanager, Tomcat shows as consuming only 25 to 30 MB memory and 0% cpu
• Tomcat's stdout/stderr logs dont log any entries as they remain at 0 kb
• Tomcat service logs show no errors despite showing successful starts, stops and restarts
• Upon starting Tomcat in batch mode by running startup.bat from CMD window, following exception was thrown -

Nov 12, 2010 2:12:35 PM org.apache.tomcat.util.digester.Digester fatalError
SEVERE: Parse Fatal Error at line 1 column 1: Content is not allowed in prolog.org.xml.sax.SAXParseException: Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:236)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:215)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:386)
--
at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)

Nov 12, 2010 2:12:35 PM org.apache.naming.NamingContext lookup
WARNING: Unexpected exception resolving reference
org.xml.sax.SAXParseException: Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1269)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1580)
at org.apache.catalina.users.MemoryUserDatabase.open(MemoryUserDatabase.java:401)
 ---

Windows 2008 Standard Edition
SAP BusinessObjects Enterprise / Edge XI3.1 All Servicepacks
Apache Tomcat 5.5

Tomcat Infoview CMC failed to load , KBA , BI-BIP-DEP , Webapp Deployment, Networking, Vulnerabilities, Webservices , Problem