You can download the new Tomcat distribution here: http://tomcat.apache.org/download-70.cgi#7.0.64
Here are the steps to upgrade Apache Tomcat on management server.
1. Stop Data Insight services: From the command prompt, issue the following command: net stop DataInsightConfig net stop DataInsightComm net stop DataInsightWeb net stop DataInsightWatchdog net stop DataInsightWorkflow net stop DataInsightPortal 2. Backup previous <INSTALL_DIR>/DataInsight/portal_tomcat/conf/server.xml & <INSTALL_DIR>/DataInsight/portal_ tomcat/conf/tomcat-users.xml. 3. Backup previous <INSTALL_DIR>/DataInsight/portal_ tomcat/webapps/* 4. Delete <INSTALL_DIR>/DataInsight/portal_ tomcat/*. 5. Copy new tomcat distribution to <INSTALL_DIR>/DataInsight/ tomcat. Make sure it’s the same major version as the previous one. E.g. 7.x. 6. Delete <INSTALL_DIR>/DataInsight/portal_ tomcat/webapps/* <INSTALL_DIR>/DataInsight/portal_tomcat/conf/server.xml <INSTALL_DIR>/DataInsight/portal_ tomcat/conf/tomcat-users.xml from new distribution. 7. Replace files backed up in step 2 and 3.
8.Start Data Insight services: From the command prompt, issue the following command: net start DataInsightConfig net start DataInsightComm net start DataInsightWeb net start DataInsightWatchdog net start DataInsightWorkflow net start DataInsightPortal