I was able to install 6.2 on separate ports and now I am getting the following error on the old TAC. Please see the log below.
ps -aef|grep tomcat
tomcat 3234 1 2 Jan24 ? 00:37:14 /usr/jdk7/bin/java -Djava.util.logging.config.file=/prod/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Dport.http.nonssl=8080 -Dport.http.ssl=8443 -server -XX:NewSize=256m -XX:MaxNewSize=256m -XX
urvivorRatio=8 -Xmx2g -XX
ermSize=512m -XX:MaxPermSize=512m -Djava.endorsed.dirs=/prod/tomcat/endorsed -classpath /prod/tomcat/bin/bootstrap.jar:/prod/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/prod/tomcat -Dcatalina.home=/prod/tomcat -Djava.io.tmpdir=/prod/tomcat/temp org.apache.catalina.startup.Bootstrap start
tomcat 9829 1 13 19:52 ? 00:00:22 /usr/jdk8/bin/java -Djava.util.logging.config.file=/prod/tomcat8/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Dport.http.nonssl=8088 -Dport.http.ssl=8444 -server -XX:NewSize=512m -XX:MaxNewSize=512m -XX
urvivorRatio=8 -Xms2048m -Xmx2048m -Djava.endorsed.dirs=/prod/tomcat8/endorsed -classpath /prod/tomcat8/bin/bootstrap.jar:/prod/tomcat8/bin/tomcat-juli.jar -Dcatalina.base=/prod/tomcat8 -Dcatalina.home=/prod/tomcat8 -Djava.io.tmpdir=/prod/tomcat8/temp org.apache.catalina.startup.Bootstrap start
root 9913 6006 0 19:55 pts/2 00:00:00 grep tomcat
Failed to log on: user .. already logged on to webapp