Home » RDBMS Server » Server Administration » ASM - Unable too see Candidate Disks (Oracle 10.2.0.4.0 on RHEL 5.2 (2.6.18-92.el5) 32 bit)
ASM - Unable too see Candidate Disks [message #384296] Tue, 03 February 2009 03:10 Go to next message
kumarsz
Messages: 180
Registered: March 2005
Location: canada
Senior Member

Hi,

I am using RHEL 5.2 and Oracle database 10.2.0.4.0

I am trying to simulate ASM referring the following Article
'Simulating ASM with 10g Database by faking the hardware' By Pankaj in this forum

I have the following release
uname -r
2.6.18-92.el5

And I am using following RPMs for this
oracleasm-support-2.1.2-1.el5.i386.rpm
oracleasmlib-2.0.3-1.el5.i386.rpm
oracleasm-2.6.18-92.el5-2.0.5-1.el5.i686.rpm

I have followed the steps as mentioned in the article however when I reached step no. 7 (as mentioned below), I am unable to see the 'Candidate Disk's

I even selected the option 'Show All' but nothing is displayed

While I Reboot the Linux server, I could see that 'Mount' failed for the ASM file systems.

Again I approached the same screen and stuck at Step No.7

What could be missing here?


6. Select Configuration Option
- Select Configure Automatic Storage Management (ASM)
- Enter the ASM SYS password and confirm
- Click on Next

7. Configure Automatic Storage Management
Disk Group Name: DATA
- Redundancy
-- High mirrors data twice.
-- Normal mirrors data once. This is the default.
-- External does not mirror data within ASM. This is typically used if an external RAID array is providing redundancy.
- Add Disks
The disks you configured for use with ASMLib are listed as Candidate Disks. Select each disk you wish to include in the disk group.
- Click on Next




Thanks in Advance,
Pratap
Re: ASM - Unable too see Candidate Disks [message #385454 is a reply to message #384296] Mon, 09 February 2009 14:45 Go to previous messageGo to next message
Mahesh Rajendran
Messages: 10672
Registered: March 2002
Location: oracleDocoVille
Senior Member
Account Moderator
Are you sure the permissions are all set?
I would look again into the options that were used with
 oracleasm configure

Re: ASM - Unable too see Candidate Disks [message #388454 is a reply to message #384296] Tue, 24 February 2009 22:22 Go to previous message
kumarsz
Messages: 180
Registered: March 2005
Location: canada
Senior Member

Hi Mahesh,

Thanks for you reply

I have granted permissions (as root) as following

chown -R oracle:oinstall /asmdisk
chmod -R 777 /asmdisk
where I have disk1, disk2,disk3, disk4 under /asmdisk

But No Luck.

I repeated steps from start creating differnt disks as well but still I am unable to see the Candidate disks

Later just to experiment I started DBCA with root but I could not see those disks
However when I checked with File command I could see 'ASM Volume'

Do I need to modify any other files for these disk permissions?

Thanks and Regards,
Pratap
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