JDeveloper: Could not reserve enough space for object heap

Question

Hi i am encountering the following error when deploying an project from my jdeveloper studio.

 [scac] Error occurred during initialization of VM
 [scac] Could not reserve enough space for object heap

Can anyone advise on how to resolve this issue?

score 5 · Accepted Answer · edited May 23 '17 at 12:27

5

In case you have enough free RAM on your computer:

go to jdev.conf file (~/Oracle/middleware/jdeveloper/jdev/bin) and add more memory to the file

I haven't checked but you could add:

AddVMOption  -XX:MaxHeapSize=512m

or whatever you want

more help here

edited May 23 '17 at 12:27

Community

1
1

answered Oct 02 '12 at 11:36

Angel

1,408
1
10
6

Changing this setting I'm unable to start JDeveloper. Instead changing ant-sca-compile.xml amount of memory works: – Miguel Ortiz Jul 06 '17 at 16:44

score 1 · Answer 2 · answered Mar 04 '14 at 15:07

1

See in \jdeveloper\bin\ant-sca-compile.xml

Change Xmx value of line specified in JDe. Your system can't reserve enought memory.

answered Mar 04 '14 at 15:07

Emmanuel

131
1
4

Ty, I've changed my settings in the ant-sca-compile.xml Now it works. – Miguel Ortiz Jul 06 '17 at 16:44

score 1 · Answer 3 · answered Jul 06 '17 at 16:54

Reducing the value -Xmx on \jdeveloper\bin\ant-sca-compile.xml worked for me:

<target name="scac" description="Compile and validate a composite">
  <scac input="${scac.input}" outXml="${scac.output}" error="${scac.error}" appHome="${scac.application.home}" failonerror="true" displayLevel="${scac.displayLevel}">
    <jvmarg value="-Xms128m"/>
    #<jvmarg value="-Xmx1024m"/>
    <jvmarg value="-Xmx700m"/>
    <jvmarg value="-XX:PermSize=32m"/>
    <jvmarg value="-XX:MaxPermSize=256m"/>
    <!-- jvmarg value="-Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005"/ -->
  </scac>
</target>

If you change jdev.conf you may experience the error:

Unable to create instance of the Virtual Java Machine Located at Path: C:\Program Files(x86)\Java\jdk1.6.0_45\jre\bin\client\jvm.dll

JDeveloper: Could not reserve enough space for object heap

3 Answers3

Linked