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Weblogic 10.3 Heap Size (does not allow 3072mb)

Posted by Venkatt Guhesan on September 21, 2010

Has anyone experienced a similar issue? In tuning Weblogic 10.3 R27.6.0-50 for Windows, we were trying various values for the heap size.

Startup jRockit options:

-Xms1024m -Xmx1024m

We were setting both values to the same.

1024m = worked
2048m = worked
3072m = did not work
4096m = worked

Did anyone experience a similar problem in allocating? Is there something special about 3072MB?

Update from Sept. 28th, 2010:
When we tried this additional property in the start-up parameter the 3GB option works:
-XxcompressedRefs=0

You can learn more about that parameter here.

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