Here’s a short howto for upping tomcat/railo-server’s memory:

The secret’s in tomcat’s JAVA_OPTS variable (java runtime options), which is defined in the catalina-startup-script.
You should be able to find this catalina.sh named script in /<tomcat-install-dir>/bin/catalina.sh
Have a look at the file and grep for JAVA_OPTS, you’ll find the following line:

JAVA_OPTS="$JAVA_OPTS -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager"

Now you can add some startup-parameters like this:

JAVA_OPTS="$JAVA_OPTS -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Xms128m -Xmx512m"

Look for more detailed information at this wiki-section at apache.org

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