How to active Java VM 64-bit in Snow Leopard?

[NghiaDev]

Hi everyone,

I have an issue that Applications > Utilities > Java References says that my system has installed a 32-bit Java Virtual Machine so I understand I cannot run eclipse in 64-bit mode

How do I active 64-bit Java VM in Snow Leopard 10.6.2 ?

I googled this issue but I didn't found a solution?

What's about your system? does it show 32 or 64 bit JVM ?

[Imkantus]

Mine shows both 32-Bit and 64-Bit - running 10.6.2 / 32-Bit (Vanilla) Kernel & Extensions.

I guess it's related to your CPU as non Vanilla systems do not activate the 64-bit adressing feature by default - you can try if it works, when using the quoopz Kernel with the -force64 bootflag.

[NghiaDev]

Thank you Imkantus for your reply, SL detects a Intel Core 2 Solo, but my PC is P4 630 3GHz Hyper Threading, and yes, my hack cannot run Vanilla kernel, I tried quoopz with -force64 but my hack still 32-bit, I'm currently use a kernel from pcj and it actived 64-bit kernels + kexts, however Java VM still not offer 64-bit Perhaps I should fake my hack has Core 2 Duo not Core 2 Solo, but do not know how?
On Leopard 10.5.8, Java VM has 32+64-bit.
Strange