How do I change the Java heapsize?
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Accepted answer
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Instead of touching the catalina.bat, you should rather edit <install dir>/server/server.startup.bat (or shell script)
Look for these lines, and edit them to meet your needs:
set JAVA_OPTS=%JAVA_OPTS% -Xmx4G
set JAVA_OPTS=%JAVA_OPTS% -Xms4G
set JAVA_OPTS=%JAVA_OPTS% -Xmn512M
Try to keep max (-Xmx) heap == min (-Xms) heap, and nursery size (-Xmn) to 1/8 of max heap.
Look for these lines, and edit them to meet your needs:
set JAVA_OPTS=%JAVA_OPTS% -Xmx4G
set JAVA_OPTS=%JAVA_OPTS% -Xms4G
set JAVA_OPTS=%JAVA_OPTS% -Xmn512M
Try to keep max (-Xmx) heap == min (-Xms) heap, and nursery size (-Xmn) to 1/8 of max heap.
3 other answers
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Hi Sandra,
If you want increase Java heap size on websphere follow these steps below.
Tks
Anderson
If you want increase Java heap size on websphere follow these steps below.
-
Open the WebSphere Application Server administrative console,
http://hostname:port/ibm/console
, and log in. - Expand Servers > Application servers > server1 > Java and Process Management > Process Definition > Java Virtual Machine.
- Change the Max Heap Size to a larger value.
- Click Apply and click Save at the top of this page.
- Restart WebSphere Application Server.
Tks
Anderson