Error "Could not reserve enough space for object heap" When Starting JDeveloper or SQL Developer (Doc ID 729443.1)

Last updated on AUGUST 18, 2016

Applies to:

Oracle SQL Developer Data Modeler - Version All and later
Oracle SQL Developer - Version 2.0 and later
Oracle JDeveloper - Version 11.1.1.0.0 and later
Information in this document applies to any platform.
***Checked for relevance on 25-Jan-2012***


Symptoms

When starting JDeveloper, the application within JDeveloper is throwing the error message:

"could not reserve enough space for object heap"


and a windows popup with the following error message:

"Unable to create an instance of the Java Virtual Machine Located at path: ..\..\jdk\jre\bin\client\jvm.dll " 

Cause

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