Is it possible to dynamically change maximum java heap size?

Question

I know you can set max heap size at startup using -Xmx but is it possible to change it dynamically during runtime?

Is there any tool or (undocumented) api which will allow me to do that?

score 7 · Accepted Answer · answered Jul 07 '09 at 10:36

7

No, it is not possible.

answered Jul 07 '09 at 10:36

Marko

Which is too bad so we could have GC ergonomic agents. – Jé Queue Apr 21 '10 at 23:58

score 2 · Answer 2 · answered Jul 07 '09 at 10:37

2

Once the memory structure is fixed it cant be changed

answered Jul 07 '09 at 10:37

Umair Ahmed

2 Answers2