Hi All,
With Rich Signell's help, I was recently able to end a bout of daily PermGen
errors after my TDS 4.2 upgrade and wanted to shared the solution here in case
it might be useful to others. As recommended in TDS training, I had previously
used the following JAVA_OPTS settings to increase the initial and maximum
allocated memory of the JVM to help performance and avoid frequent PermGen
errors:
-Xms512m -Xmx1500m
However, after 4.2 my system was hung with daily PermGen errors in my
catalina.out despite the above settings. In addition to the above, Rich
recommended the following, which I also subsequently found echoed in the TDS
FAQ (which shows 128m):
-XX:MaxPermSize=180m
Since making the above addition, I have not had anymore PermGen errors.
Cheers,
John Maurer
Hawaii Ocean Observing System (HiOOS)
University of Hawaii
P.S. You can update JAVA_OPTS in $TOMCAT/bin/setenv.sh. My file includes the
following line for JAVA_OPTS (plus a couple others for setting JAVA_HOME and
CATALINA_HOME):
JAVA_OPTS="-Xmx1500m -Xms512m -XX:MaxPermSize=180m -server
-Djava.awt.headless=true"
export JAVA_OPTS
