My Oracle Support Banner

JRockit 8.1 SP1- Unable to allocate very large heaps even with /3GB param in BOOT.INI (Doc ID 774130.1)

Last updated on OCTOBER 11, 2018

Applies to:

Oracle JRockit / JRockit / 8,1
Information in this document applies to any platform

Goal

JRockit is unable to allocate very large heaps (2G+) even with the /3GB param specified in BOOT.INI in Win2K advanced
server (see 
http://e-docs.bea.com/wljrockit/docs142/tuning/config.html#1012655).  When the following command is run:
bin\java -Xms2g -Xmx2g -verbosegc -version, the following message is displayed:

[memory ] Unable to aquire some virtual address space - reduced from 2147483648 to 1942126592 bytes!
[memory ] Generational Concurrent collector
[memory ] nursery 10240K, heap 1886368K, maximal heap 2097152K
[memory ] <start>: Nursery GC <before>K-><after>K (<heap>K), <total> ms
[memory ] <s>-<end>: GC <before>K-><after>K (<heap>K), <total> s (<pause>
ms)
[memory ] <s/start> - start time of collection (seconds since jvm start)
[memory ] <end>     - end time of collection (seconds since jvm start)
[memory ] <before>  - memory used by objects before collection (KB)
[memory ] <after>   - memory used by objects after collection (KB)
[memory ] <heap>    - size of heap after collection (KB)
[memory ] <total>   - total time of collection (seconds or milliseconds)
[memory ] <pause>   - total pause time during collection (milliseconds)
java version "1.4.1_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_03)
BEA WebLogic JRockit(R) Virtual Machine (build 8.1sp1-1.4.1_03-viking-Load7-win32-sthqa28-20030619-1312, Native
Threads
 Generational Concurrent Garbage Collector)

The behaviour is the same with the Sun JVM as well.

Solution

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
  Goal
  Solution
  References

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.