Hi Raja
If you check httpd.conf you will find there are several entries as per :
JkUnMount /*/siteminderagent/pw/PWStartChange.html ajp13
You will need to do the same for your .html page if you want that served from the apache rather than served through tomcat.
By default (unless specified in that JkUnmount setting) all requests are passed onto tomcat/ proxy-engine which then handles them via proxyrules.xml. If you want to serve the .html file locally adding a rule there will exclude it from being passed to tomcat. And hopefully that fixes your issue.
Cheers - Mark
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Mark O'Donohue
Snr Principal Support Engineer - Global Customer Success
CA Technologies | 380 St. Kilda Road Level 2 | Melbourne, VIC 3004
Office: +61 3 9944 6733 | Mark.ODonohue@ca.com