Rational Buildforge installation
One answer
Having Rational Build Forge use WebSphere Application Server (WAS) instead of the built-in Apache Tomcat is actually pretty straightforward.
In the IBM Installation Manager installer for Rational Build Forge, you are going to want to answer "yes" to the question about supplying your own application server.
This is covered the the following article in the Rational Build Forge InfoCenter: http://pic.dhe.ibm.com/infocenter/bldforge/v7r1m3/index.jsp?topic=%2Fcom.ibm.rational.buildforge.doc%2Ftopics%2Finstall_mc_installer_steps.html
Next, you are going to follow the steps in the following article in the Rational Build Forge InfoCenter for installing the applications into WebSphere Application Server. Here is a link to the article: http://pic.dhe.ibm.com/infocenter/bldforge/v7r1m3/index.jsp?topic=%2Fcom.ibm.rational.buildforge.doc%2Ftopics%2Fconfig_integrations_websphere_was.html
Please make sure that the Rational Build Forge applications are started in WebSphere Application Server before starting Rational Build Forge so that the intra-component communication can occur successfully.