How to find the default Java 1.4.2 heap size in AIX

Question

Hi can help to advise me how to find the default heap size ?

I didn't mention the minimum and maximum heap size in the startup script . However both max and minimum value auto set to 512 MB .

so where it is mentioned ?

I've tried the below command :

Java -XX:PrintFlagFinal -version | grep HeapSize

but hitting below error

The JVM option is invalid: -XX:PrintFlagFinal Could not create the java virtual machine.

java -verbose:sizes -version

[JVMCI129 : unrecognized verbose option : -verbose:sizes]

[JVMCI123:unable to parse 1.2 format supplied options -rc=-6]

Could not create the Java virtual machine

Server : AIX Java version : 1.4.2 Physical memory of our server is 23616MB

Answer 1

Following command might help you

java -verbose:sizes -version