Page 1 of 1
Issue allocating over 4gb of RAM for a guest
Posted: 25. Jul 2013, 18:07
by RezMT
Hi All,
I have read through
this session, but I couldn't get my answer.
My mac pro has 16 GB of memory (14 GB ) available, and I am trying to run the Oracle SOA 11g PreBuild virtual machine in my Virtual box.
However the same issue as mentioned here, the available memory size is only 4 GB. I have VMWare Fusion on this machine but it doesn't seems to have this problem and it can see whole amount of available memory. I have even try to make sure the os is 64 bits.
I do appreciate if someone can help me in this regards.
Thanks,
Rez
Re: Allocating over 4gb of RAM for a vm guest
Posted: 25. Jul 2013, 18:19
by mpack
Re: Allocating over 4gb of RAM for a vm guest
Posted: 27. Jul 2013, 05:52
by RezMT
Hi I am attaching all info regarding to my VB and Oracle soa 11g to this post.
My comp spec: Mac Pro 1,1 16GB Memory 2x2.6 CPU - Max OSX Lion
On VMWare fusion I can go even to 8GB of my Memory, but on VBox only 4GB maximum.
Re: Allocating over 4gb of RAM for a vm guest
Posted: 27. Jul 2013, 09:49
by mpack
RezMT's VBox.log wrote:
VirtualBox VM 4.2.16 r86992 darwin.x86 (Jul 4 2013 16:13:18) release log
As discussed in
the thread, your host is using a 32bit kernel, therefore no single memory object can be larger than 4GB, e.g. the RAM allocation for your VM. You need to switch to 64bit kernel mode.
Re: Allocating over 4gb of RAM for a vm guest
Posted: 27. Jul 2013, 10:17
by RezMT
Hi mpack,
I do appreciate your reply. I am new to the Mac OSX. If you don't mind, do you know any command to help me to switch to 64 bits?
I have found the following command:
Code: Select all
sudo systemsetup -setkernelbootarchitecture x86_64
but still doesn't work for me.
Code: Select all
192-168-1-4:~ root# cat /Library/Preferences/SystemConfiguration/com.apple.Boot.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Kernel Architecture</key>
<string>x86_64</string>
<key>Kernel Flags</key>
<string></string>
</dict>
</plist>
Thanks,
Rez
Re: Allocating over 4gb of RAM for a vm guest
Posted: 27. Jul 2013, 11:23
by mpack
Well, this is the VirtualBox support forum, not the Mac support forum - plus I'm not a Mac user - but I believe you hold down the '6' and '4' keys during host boot. No doubt there's also a way to make it the default.
Re: Allocating over 4gb of RAM for a vm guest
Posted: 27. Jul 2013, 12:08
by noteirak
I have split this discussion from the
original topic being very informative.
Also added trackback links.