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I am using Windows 8 Pro 64 bit, Java 1.6 64 bit. I am trying to start Weblogic with following memory args (setDomainEnv.cmd):

set USER_MEM_ARGS=-Xmx2048m -XX:PermSize=512m -XX:MaxPermSize=1024m

But i'm getting an error:

Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.

Those mermory args are required to deploy the app, so i can't lower it (physical mermory installed - 8 GB).

johnny-b-goode
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  • looks like java32 bit is getting executed. Check the path and output of java -version – Jayan Dec 30 '13 at 11:33
  • If you are using java 32 bit version, 32-bit version of Java requires a contiguous block of memory.As Jayan suggested use java 64 bit version and see if you are still landing in issue. Have a look at this url for more details http://www.laurencegellert.com/2011/11/java-startup-memory-issue-solved/ – thiyaga Dec 30 '13 at 11:49

3 Answers3

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Combined with -Xmx512M use -d64 to make sure you're running 64-bit VM. On a 64-bit machine I thought for sure I was running 64-bit virtual machine, but no. After installing 64-bit Java the -d64 option works and -Xmx allows much larger memory sizes.

java -d64 -Xmx512M mypackage.Test

Please see the below link for more solutions...

Could not reserve enough space for object heap

Community
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Tatarao Vana
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I am running weblogic 81. I had min=1024 and max =1024m with 4gb or RAM. 64bit processor and 32 bit java. I tried to increase the min/max value, it did not work. So, I changed the min/max to 512m and 1024m respectively. Thn it started to work.

Zeus
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When i installed for first time, the SOA environment developed mode, needed to do that:set JAVA_OPTIONS=%JAVA_OPTIONS% set DEFAULT_MEM_ARGS=-Xms512m -Xmx768m set PORT_MEM_ARGS=-Xms768m -Xmx1536m But over time, it shows me the same error and tube to make the following change: set JAVA_OPTIONS=%JAVA_OPTIONS% set DEFAULT_MEM_ARGS=-Xms512m -Xmx512m set PORT_MEM_ARGS=-Xms512m -Xmx512m But I'm still not sure why this happens.

Dario Castro
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