For some servers, it may be required to specify a Java virtual
machine (JVM) heap size greater than the default. You can increase the heap
size of the JVM using the administrative console, the wsadmin tool, or a Java
client.
About this task
If you
are using a JVM platform that is running on a 32-bit AIX system, perform this
task if the application server, deployment manager, or node agent require
a greater heap size.
Procedure
- Set attributes that control the heap size for the JVM associated
with the server. This can be done using the administrative console, the wsadmin
tool, or a Java client.
- Perform one of the following to increase the heap size of the JVM:
- Create a script to launch the server. Use the -script option with the
command that you are using to start the target server, for example, the startServer,
startManager, or startNode commands. This will generate a
script for that you can use to launch the target server in the future.
- Manually set the environment variables before starting the target server
with the startServer, startManager, or startNode commands.
![[AIX HP-UX Linux Solaris Windows]](../../dist.gif)
With the following settings, you can specify a maximum
heap size for the JVM of 11 multiplied by 256 megabytes:
export IBM_JVM_LDR_CNTRL_NEW_VALUE=MAXDATA=0XB0000000@DSA
export LDR_CNTRL=MAXDATA=0XB0000000@DSA
![[AIX]](../../aixlogo.gif)
For additional information on AIX address space management,
view the following sources: