Oracle Linux virtual machines failing to boot

We have 2 oracle linux virtual machines on one host machine, both running Oracle Linux release 6 update 2 for X86_64. Both were built identically with oracle 11 installed on them. Both machines were working ok until this morning when the host machine rebooted. After the reboot, the virtual machines now hang during the boot process. The login prompt never comes up. The database does not start up on both machines. The machines are up enough that I could putty into them. In startup.log, the following is listed for the two machines. One is named demo, the other test.
SQL*Plus: Release 11.2.0.1.0 Production on Fri Oct 4 12:24:02 2013
Copyright (c) 1982, 2009, Oracle. All rights reserved.
SQL> Connected to an idle instance.
SQL> ORACLE instance started.
Total System Global Area 438423552 bytes
Fixed Size            2214136 bytes
Variable Size          331351816 bytes
Database Buffers      100663296 bytes
Redo Buffers            4194304 bytes
Database mounted.
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/u02/oradata/demo/redo02.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
SQL> Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
/u01/app/oracle/dbhome_1/bin/dbstart: Database instance "demo" warm started.
SQL*Plus: Release 11.2.0.1.0 Production on Fri Oct 4 13:06:49 2013
Copyright (c) 1982, 2009, Oracle. All rights reserved.
SQL> Connected to an idle instance.
SQL> ORACLE instance started.
Total System Global Area 438423552 bytes
Fixed Size            2214136 bytes
Variable Size          331351816 bytes
Database Buffers      100663296 bytes
Redo Buffers            4194304 bytes
Database mounted.
ORA-03113: end-of-file on communication channel
Process ID: 3665
Session ID: 1 Serial number: 5
SQL> Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
/u01/app/oracle/dbhome_1/bin/dbstart: Database instance "test" warm started.
The demo machine is looking for a redo log file. The file does not exist. If that file ever existed, what would make that file disappear? The test machine does not have any redo log files either but the test one is not even looking for it.
What could have gone wrong with these?

user7222768 wrote:
We have 2 oracle linux virtual machines on one host machine, both running Oracle Linux release 6 update 2 for X86_64. Both were built identically with oracle 11 installed on them. Both machines were working ok until this morning when the host machine rebooted. After the reboot, the virtual machines now hang during the boot process. The login prompt never comes up. The database does not start up on both machines. The machines are up enough that I could putty into them. In startup.log, the following is listed for the two machines. One is named demo, the other test.
SQL*Plus: Release 11.2.0.1.0 Production on Fri Oct 4 12:24:02 2013
Copyright (c) 1982, 2009, Oracle. All rights reserved.
SQL> Connected to an idle instance.
SQL> ORACLE instance started.
Total System Global Area 438423552 bytes
Fixed Size            2214136 bytes
Variable Size          331351816 bytes
Database Buffers      100663296 bytes
Redo Buffers            4194304 bytes
Database mounted.
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/u02/oradata/demo/redo02.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
SQL> Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
/u01/app/oracle/dbhome_1/bin/dbstart: Database instance "demo" warm started.
SQL*Plus: Release 11.2.0.1.0 Production on Fri Oct 4 13:06:49 2013
Copyright (c) 1982, 2009, Oracle. All rights reserved.
SQL> Connected to an idle instance.
SQL> ORACLE instance started.
Total System Global Area 438423552 bytes
Fixed Size            2214136 bytes
Variable Size          331351816 bytes
Database Buffers      100663296 bytes
Redo Buffers            4194304 bytes
Database mounted.
ORA-03113: end-of-file on communication channel
Process ID: 3665
Session ID: 1 Serial number: 5
SQL> Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
/u01/app/oracle/dbhome_1/bin/dbstart: Database instance "test" warm started.
The demo machine is looking for a redo log file. The file does not exist. If that file ever existed, what would make that file disappear? The test machine does not have any redo log files either but the test one is not even looking for it.
What could have gone wrong with these?
Perhaps not all the file system mounted.
Does /u02/oradata/demo exist?
How about /u02/oradata
How about /u02

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[SOLVED] Arch Linux Duke (2007) Fails to Boot

Folks, I have a unique and challenging problem that has exhausted my Arch Linux skills, and so I am now turning to you.
I have a vintage Pentium Pro 200 system (that’s 200 MHz folks! – 200 MHz 686 architecture – the original 686!), two CPUs, running a dual boot between Windows NT 4.0 and Arch Linux Duke (2007). It has 512 MB of RAM and a 120 GB hard drive, partitioned up between Windows NT and Linux. I built this system new in 2007, hence the dated version of Arch. It has run like a charm all these years, granted not getting that much use. After about a year of no use at all, I fired the system up last week to help with a little research for a blog post I was writing on networking Windows NT 4.0 and Mac OS 8.6. Windows NT 4.0 fired right up with no issue, and after I was done testing what needed to be tested I tried to boot over to Arch.
After a year of disuse, Arch unexpectedly and stubbornly refused to boot. The boot process started up just fine, but towards the end, it declared that it could not mount the root file system on the root device and took a kernel panic and stopped. My Arch skills have gotten a bit rusty in the last few years, but I dusted them off and went to work. My guess was a file system or superblock error. Arch wouldn’t boot, but I dragged out my trusty RIPLinux 2.9 Rescue Live CD and fired it up. It came right up and ran, and I was able to mount the Arch partition and view all the files… everything seemed to be there; it just wouldn’t boot. Windows NT 4.0 AND RIPLinux both boot and run on the machine, so the hardware is fine as well.
A little information on the disk layout. Windows NT 4.0 is in the first partition on the hard drive. The extended partition has a second Windows NT 4.0 partition (sort of a /home partition for Windows NT 4.0), followed by the main Arch partition (the one I am trying to boot), followed by a swap partition and then the largest partition, which I use to share data between Arch and Windows NT 4.0 (I have loaded an ext2/3 driver into Windows NT 4.0 and it happily accesses the Linux partitions on the box).
RIPLinux’s e2fsck did find some issues with the Arch partition and I had it repair them all. I checked again afterwards that all the files were still there, and they were. With the partition now known to be clean, and the superblock repaired from one of the backups, all should have been well. However, Arch still wouldn’t (and still won’t) boot.
RIPLinux has a kind of a chain loader function, so I had it attempt to start up Arch for me. However, this was flummoxed by the fact that Arch addresses all my hard drive partitions as /dev/sdax and RIPLinux addresses them as /dev/hdax. Hence, without a common language, it was hard to get the one to start the other. Still, using this function, I have been able to get a crippled version of Arch running on the machine again. No modules had been loaded, and so it couldn’t do almost anything, but there it was (and is), Arch Linux Duke, at the CLI level. From there, I can see all the files, I can move freely in and out of my user account and the root account, but I can’t make the thing actually boot properly.
If you have read this far, you are a trooper. Summarizing what I know, the hardware is good, the file system is clean, the superblock is good, I can mount it cleanly from a live CD and I can chain load a crippled version of Arch. Here is the boot process blow-by-blow. When I try to do a normal boot, the Windows NT 4.0 loader passes control to the Lilo boot sector I have placed on hda1 (sda1 in Duke’s parlance). Lilo takes over, present a menu and when I select Duke, takes off. Arch Linux Duke starts to boot. It gets a good long way along, all the way along to:
:: Loading udev events [Pass]
:: Mount root Read-only
:: Checking file systems
This is where it stops.
The next thing I see is:
/dev/sda6
The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else) then the superblock is corrupt and you might try running e2fsck with an alternate superblock:
E2fsck –b 8193 <device>
I then get a sort of character based splash screen that says
**********FILE SYSTEM CHECK FAILED ****************************
* Please repair manually and reboot. Note that the root file system
* is currently mounted read-only. To remount it read-write, type:
* mount –n –o remount,rw /. When you exit the maintenance
* shell, the system will reboot automatically
Give root password for maintenance
At this point, I give the root password and enter the maintenance shell as root. I typed in “mount” and the first entry I got back is
/dev/sda6 on / type ext3 (rw)
This is exactly the root partition that the start up complains about. It is clearly there. I can see it, I can walk around it… it is clearly there. Why won’t it boot? Despite the message, the superblock is fine – it passes every test e2fsck can throw at it.
At this point, I did a “e2fsck /dev/hda6 (which is how RIPLinux would have passed it into Arch” and it says it is “clean”. I suspect that the Superblock message is because Arch sees root as sda6, while RIP passed it in as hda6...
Deciding to see what Arch would be seeing as it tried to set things up in the boot sequence, I tried the following next:
# mknod “/dev/root2” b 3 6
(“3” because RIPLinux refers to my hard drive as IDE, while Arch refers to it by major number “8”, which is SCSI. By the way, it IS an IDE drive – not sure why Arch insists on using the sdx nomenclature instead of hdx)
Then I entered “mount /dev/root2 /mnt/hda6” and “ls /mnt/hda6”
All was well. I can make the node, I can mount it, and I can see the contents. All is clearly well, but something is clearly wrong enough that Arch can’t boot.
I am totally out of ideas. I have tried every trick I know and am out of tricks. I would welcome any insights as to what I could try to get this venerable Arch installation back on its legs.
By the way, the key section of the /etc/lilo.conf file (lest anyone want to know) is:
image = /boot/vmlinuz26
root = /dev/sda6
label = ArchLinux-Duke
initrd = /boot/kernel26.img
read-only
I am stumped. Thanks in advance for any and all pointers you may be able to offer.
Last edited by mac57 (2014-06-02 17:42:21)

Folks, thanks for all your helpful comments, and I wanted to report back to you that I finally overcame the issue, and ArchLinux-Duke (2007) is once again executing flawlessly on my old Pentium Pro 200 system. I won't bother reporting here all the blind allies I went down as I tried to figure out what was wrong, but in the end, literally moments before I was about to give up and overwrite my Arch installation with a new Linux variant (antiX seemed well suited for such old and low power hardware), my attention was drawn to a note I had made in my files back in 2007 about a problem with similar symptoms. In that case, I had just deleted ZenWalk Linux from the hard drive (both Arch and Zen had been on the drive), and merged several partitions to make use of the newly free space. This had changed Arch's view of the drive lettering, and what had been its /dev/sddx root device was now /dev/sdcx. Arch failed to boot, throwing off the same errors I was seeing now. I wish I had recalled that note a month or so ago! It would have saved me a lot of work and a lot of frustration.
At any rate, as a last step, and testing the idea that maybe the drive lettering had changed for some reason, I repeatedly manually booted Arch, specifying root=/dev/sda6, then /dev/sdb6, then /dev/sdd6, and finally, /dev/sdc6. Eureka! Arch now considered itself to be on /dev/sdc6 whereas previously it had been on /dev/sda6. This got me part way there, but the boot failed at the filesystem check stage and threw me into root. I disabled the file system check in /etc/rc.sysinit and got farther. Then I cleaned up /etc/fstab to agree with the new sdc naming, and I was back on the air fully.
So, what had happened was that Arch had changed its view of the drive it was on from sda6 to sdc6. While I could not understand why this "sudden" change had occurred, at least I had a solution, and had Arch back up and running.
Trolling through the rest of my notes, I found the answer. In 2012, the Tekram SCSI card in the machine failed, and I ultimately replaced it with an Adaptec card. The Tekram card did not have a BIOS segment on it. The Adaptec card did. My guess is that this caused the two internal SCSI devices I have built into the system (Iomega ZIP and Jaz respectively) to be enumerated first, claiming the "sda" and "sdb". device names. That left "sdc" for the root device, and that is where Arch went next. This is my guess anyway.
I should have caught this issue back in 2012, at the time, but from my notes, I can see that I tested the new card thoroughly using the Windows NT 4.0 side of the machine, but never thought to bring up Arch as well. Hence, this problem lay dormant for two years, before I attempted to fire up Arch last month and blundered right into it.
It has not all been bad. I have learned more about the ext2 and ext3 file systems and superblocks in the intervening time than I will ever need to use. I have learned how to manually boot Linux on a machine whose BIOS is so old that it cannot address the disk cylinder that the kernel is on and I have completely refreshed the many general Linux skills that used to just flow from my finger tips. It has been a frustrating experience, but ultimately a successful and useful one.
Just wanted to let everyone know that this is now [SOLVED]. I would mark the post as such, but I don't see any obvious way to do that. Thanks again everyone.

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           [ ThreadID]    1396
   Channel    Microsoft-Windows-Hyper-V-VMMS-Admin
   Computer    viveksasmung
-    Security
           [ UserID]    S-1-5-18
-    UserData
-    VmlEventLog
   VmName    CentOS65
   VmId    9EF5529D-3755-40B3-AC6A-325A564D19BB
   ErrorMessage    %%2148007941
   ErrorCode    0x80080005
The WMI-Activity log shows the error:
Id = {00000000-0000-0000-0000-000000000000}; ClientMachine = VIVEKSASMUNG; User = viveksasmung\Vivek; ClientProcessId = 9756; Component = Core; Operation = Start IWbemServices::ExecNotificationQuery - root\virtualization\v2 : select * from __InstanceDeletionEvent
within 2 where TargetInstance ISA 'Msvm_ComputerSystem' ; ResultCode = 0xC7F0FCD0; PossibleCause = Could not send status to client
The Hyper-V-VMMS Admin Log shows the error:
The worker process for virtual machine 'CentOS65' failed to respond within the startup timeout period and was restarted. (Virtual machine ID 9EF5529D-3755-40B3-AC6A-325A564D19BB)
'CentOS65' failed to start. (Virtual machine ID 9EF5529D-3755-40B3-AC6A-325A564D19BB)
The Hyper-V Worker Log shows the error:
The Virtual Machine Worker Process has lost its connection to the root\virtualization WMI namespace: General access denied error (0x80070005). As a result, some WMI operations may not function correctly. To correct the problem, try restarting the Windows
Management Instrumentation service.
I set the Hyper-V Tracing to ON using vmconnect.config
file and the error log is as follows:
Tracing Hyper-V Client version: 6.3.0.0. Rough build date (virtman file written): 05/18/2014 23:25:02
2014-07-17 01:55:28.990 [08] USER_ACTION_INITIATED VMBrowser ServerNode:ConnectToServer() Connecting to server localhost...
2014-07-17 01:55:29.008 [08] USER_ACTION_COMPLETED VMBrowser ServerNode:ConnectToServer() Successfully connected to server.
2014-07-17 01:55:29.463 [07] WARNING VirtMan WmiAssociation:GetRelatedObjects() The WMI object 'Msvm_RdvComponentSettingData' + could not be mapped to VirtMan type so ignore it.
2014-07-17 01:55:33.001 [03] USER_ACTION_INITIATED VMBrowser ServerNodeViewControl:OnStartVm() Starting VM(s)...
2014-07-17 01:55:33.023 [09] USER_ACTION_INITIATED VMBrowser VMActionBatchPerformer:Perform() Changing virtual machine '9EF5529D-3755-40B3-AC6A-325A564D19BB' ('CentOS65') state from 'PowerOff' to 'Running'
2014-07-17 01:59:33.927 [12] ERROR VirtMan ThrowHelper:ThrowVirtualizationOperationFailedException() Operation 'SetState' failed with message ''CentOS65' failed to start.'.
    Error code '32768'.
    Detailed message ''CentOS65' failed to start. (Virtual machine ID 9EF5529D-3755-40B3-AC6A-325A564D19BB)
'CentOS65' failed to start worker process: Server execution failed (0x80080005). (Virtual machine ID 9EF5529D-3755-40B3-AC6A-325A564D19BB)'.
2014-07-17 01:59:33.930 [12] ERROR VMBrowser VMActionBatchPerformer:OnTaskCompleted() Tracked task operation failed!
    'CentOS65' failed to start.
       at Microsoft.Virtualization.Client.Management.ThrowHelper.ThrowVirtualizationOperationFailedException(String errorMsg, String errorDescriptionMsg, VirtualizationOperation operation, Int64 errorCode, Boolean operationCanceled,
ErrorCodeMapper mapper, Exception innerException)
   at Microsoft.Virtualization.Client.Management.View.EndMethodReturnInternal(IVMTask task, VirtualizationOperation operation, Boolean affectedElementExpected)
   at Microsoft.Virtualization.Client.Management.VMComputerSystemBaseView.EndSetState(IVMTask setStateTask)
   at Microsoft.Virtualization.Client.VMBrowser.ChangeVMStatePerformer.EndTrackedTask(IVMTask task)
   at Microsoft.Virtualization.Client.VMBrowser.VMActionBatchPerformer.OnTaskCompleted(Object sender, EventArgs e)
2014-07-17 01:59:46.103 [03] USER_ACTION_INITIATED VMBrowser ServerNode:DisconnectFromServer() Disconnecting from server localhost...
2014-07-17 01:59:46.104 [03] USER_ACTION_COMPLETED VMBrowser ServerNode:DisconnectFromServer() Server had been disconnected successfully.
Upon using BCDEdit, output is below
Windows Boot Manager
identifier              {bootmgr}
device                  partition=\Device\HarddiskVolume1
path                    \bootmgr
description             Windows Boot Manager
locale                  en-GB
default                 {current}
resumeobject            {37225af7-cc62-11e3-8277-806e6f6e6963}
displayorder            {current}
                        {3ce506e4-cc90-11e3-8b9f-8a809d5a6432}
timeout                 30
Windows Boot Loader
identifier              {current}
device                  partition=C:
path                    \Windows\system32\winload.exe
description             Windows 8.1 Pro with Media Center
locale                  en-GB
recoverysequence        {3ce506df-cc90-11e3-8b9f-8a809d5a6432}
recoveryenabled         Yes
osdevice                partition=C:
systemroot              \Windows
resumeobject            {37225af7-cc62-11e3-8277-806e6f6e6963}
bootmenupolicy          Legacy
hypervisorlaunchtype    Auto
quietboot               No
Real-mode Boot Sector
identifier              {3ce506e4-cc90-11e3-8b9f-8a809d5a6432}
device                  partition=C:
path                    \Hd0Par3.pbr
description             Ubuntu LTS 14.04
I have set permissions to the VHD folder using the command below
icacls "c:\CentOS65\CentOS65" /grant "CREATOR OWNER":(OI)(CI)(IO)F
icacls "c:\CentOS65\CentOS65" /grant "NT AUTHORITY\SYSTEM":(OI)(CI)F
icacls "c:\CentOS65\CentOS65" /grant "NT VIRTUAL MACHINE\Virtual Machines":(RC,S,GR,RD,WD,AD,REA,RA)
icacls "c:\CentOS65\CentOS65" /grant "NT VIRTUAL MACHINE\Virtual Machines":(CI)(IO)(GR,WD,AD)
icacls "c:\CentOS65\CentOS65\Virtual Hard Disks" /grant "NT VIRTUAL MACHINE\Virtual Machines":(RC,S,GR,RD,WD,AD,REA,RA)
icacls "c:\CentOS65\CentOS65\Virtual Hard Disks" /grant "NT VIRTUAL MACHINE\Virtual Machines":(CI)(IO)(GR,WD,AD)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOSHome.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOS65.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOSHome_9E7FEF2E-85E0-4278-AABD-01D5E45EE643.avhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOS65_28FF0E50-0FBA-4754-A4CC-B3DAEC7E3DAA.avhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOSHome.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOS65.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOS65.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(F)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOSHome.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(F)
icacls "C:\CentOS65\CentOS65\Virtual Machines\9EF5529D-3755-40B3-AC6A-325A564D19BB.xml" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(F)
I am unable to create new VMs as well.
I have already run
sfc/ scannow
DISM
Already Tried disabling the antivirus
Upon using wbemtest and connecting to root\virtualization, I am able to click Enum Classes > Recursive
Kindly suggest how to get HyperV working please. Any help (short of reinstalling /resetting windows) would be much appreciated.
Warm Regards,
Dr Vivek Gupta

Hi,
The key point would be this:
The Virtual Machine Worker Process has lost its connection to the root\virtualization WMI namespace: General access denied error (0x80070005).
Please open MMC, add Component Services snap-in:
Component Services -> Computers -> My Computer -> DCOM Config -> Windows Management Instrumentation -> Right Click, Properties -> Security “Launch and Activation Permission” -> Edit -> gave Authenticated Users
Full Control
Check the result.
Alex Zhao
TechNet Community Support

[SOLVED] virtual machine or dual-boot for development

I'm about to setup a new machine and I am in need of some advice on whether to dual-boot or run a virtual box. Arch Linux is my primary OS, but I need Windows 7 (64-bit) for certain development work. Specifically, the tools I use are Visual Studio Express 10/11 and NI LabVIEW, and I almost always run them both at the same time. Would this type of situation be better suited for a dual-boot setup or could I run it in VirtualBox? I haven't done a lot of work with virtual machines, so I'm not sure of how they typically perform. I mostly care about seamless performance and I honestly don't mind rebooting between the OSes, but if I cat get seamless performance using VirtualBox, then why not go that route. Also, not having to setup up the dual-boot is a plus.
The hardware of this machine includes: 8 gigs of ram, AMD FX 8350, 128 GB SSD, and a 1 GB Radeon 4670 graphics card.
I know this question has been touched on in other posts, but most of the posts I've seen are more than a year or two old. Given advances in hardware, I'm interested in a current advice.
Last edited by tlawren (2013-03-11 16:22:53)

Hi,
I have a similar setup for my work. My hardware is : Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 16GB of ram, 256GB SSD SED. I run a Windows 8 VM inside Virtualbox with the guest addition + extension pack and use VS 2012 Pro on daily basis.
My VM is configured to have only 1 CPU with a 100% execution cap and 4GB of ram. Thing run just perfectly like this, fluent and eye candy. Depending on my need I increase the number of CPU or tweak the execution cap.
Cheers
Edit:
Sadly modifying the VM CPU number must be done offline. However the execution cap can be tweaked online.
Last edited by dna (2013-03-11 12:46:04)

Oracle Linux 6.4 Do Not Boot After GUI Installation

Hi Guys,
I installed Oracle Linux 6.4 in my Virtual Box Machine with Minimal Option.
There was only command page withouth any GUI.
and then i have installed 'X Window System' and 'General Purpose Desktop'
by writing
yum groupinstall -y 'X Window System'
yum groupinstall -y 'General Purpose Desktop'
I changed /etc/inittab run level from 3 to 5
when i test it with by writing
init 5 and startx command. It worked and i could see GUI Desktop
BUT
when i shutdown system and re-open system. Page remains as shown below. Any help will be making me so happy.
Thank you from now.

Dude!
solved the problem. I have issued your suggestion and i have received error with yum installation as shown below,
But then i have updated operating system with
#yum update
i reboot the system with
#reboot
and then i go into /etc/inittab file
#vi /etc/inittab
at the very end of file. I have changed runlevel 3 to 5 as you said.
and i test it with
#init 5
It worked !
Thanks Dude!

Oracle Linux virtual machines failing to boot

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