Cisco Network Assistant + Vista

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Jan 15th, 2008
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i installed Cisco Network Assistant 5.3 on a Windows Vista Ultimate Machine, and it give me this message every time i start the program


title: Java Virtual Machine Launcher

Could not create the Java Virtual machine


i thought it was a java problem but restart the machine in safe mode and CNA ran ok!!!!

but in normal mode the massage apper all the time even if i install the latest java 1.6 u4

pleas any help!!!!!

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aborole Wed, 01/16/2008 - 05:50
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  • Cisco Employee,

This is not a known issue on Vista. The error message you mention has been seen in the past on other OS resulting from problems with java heap settings. In normal mode on vista , can you do this test from a dos window:

Go to the directory "C:\Program Files\Cisco Systems\Cisco Network Assistant\packages\runtime-1.2\bin" or equivalent directory where you have installed CNA and issue the command "java -Xmx1024m -version" on the command line and see if you get any error message. Post that error text in your reply - it will help to find out if this is similar to the issues we have seen on other OS.

amk316316 Fri, 01/18/2008 - 23:13
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C:\Program Files\Cisco Systems\Cisco Network Assistant\packages\runtime-1.2\bin>java -Xmx1024m -version

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.

aborole Sat, 01/19/2008 - 09:09
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  • Cisco Employee,

This is the same problem I suspected. You can try setting a smaller java heap size than 1024m in C:\Program Files\Cisco Systems\Cisco Network Assistant\startup\ file - modify the line "JVM_MAXIMUM_HEAP=1024m" to use a value smaller than 1024 that works with your setup.


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