Did you try to enclose them in double quotes?
export CATALINA_OPTS="-Xms16m
-Xmx256m"
You need to remove the ";" at the end of the line.
Increasing Java's heapspace in Tomcat startup script
Did you try to enclose them in double quotes?
export CATALINA_OPTS="-Xms16m
-Xmx256m"
You need to remove the ";" at the end of the line.