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Oracle iPlanet Web Server Failed to Load JVM "Could not reserve enough space for object heap" Due to 32-bit 2GB Windows Process Limitation (Doc ID 1337346.1)

Last updated on OCTOBER 27, 2020

Applies to:

Oracle iPlanet Web Server - Version 7.0 and later
Information in this document applies to any platform.
***Checked for relevance on 25-Jul-2013***


When you change the JVM heap settings with Oracle iPlanet Web Server running on Windows 2008 you may encounter the issues recorded in the errors log shown below:

The log entries written above indicate that you do not have enough address space available for the JVM heap size that you have requested.

Windows 2008 has a limitation in memory associated to the process. The default maximum process address space for 32-bit applications on Windows is 2GB which leaves approximately 1.5GB available for the heap. The JVM and Web Server need some internal address space for threads, libraries, etc... .

You have reached a Windows limitation "Maximum Address Space Per Process" due to your current JVM settings. Please reference the Microsoft document on "Memory Limits for Windows Releases" at the link below for details:


Change the JVM settings.


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