Re: Trying to understand an ASM discrepancy

  • From: Alex Gorbachev <ag@xxxxxxxxxxxx>
  • To: wjwagman@xxxxxxxxxxx
  • Date: Wed, 2 Apr 2008 20:49:24 -0400

Did I understand you correctly - asm_diskgroup is empty on both nodes?
If so, I think on node 1 you have some missing RPM's for ASMLib or something wrong with it so Oracle instance doesn't load ASMLib driver. Compare alert.log on both machines - it should mention loading ASMLib driver there if I recall correctly.
On a slightly different note - consider getting rid of ASMLib - is it worth the pain and adding another layer of complexity? 

On 2-Apr-08, at 8:06 PM, William Wagman wrote:


Greetings,

I am looking at a two node rac cluster running on 32-bit RHEL4, oracle
10.2.0.3.0 SE and am puzzled by a discrepancy in the description of the library and system as listed in the V$ASM_DISK view in the ASM instance. 
The ASM and RDBMS are installed in separate homes. On node 1 I see the
following...

.....

As I understand it when the library is listed as system it means that
the asm_diskstring parameter is not set correctly. The puzzling thing is 
that in the instance on each node it is set to null. The asm_diskgroup
parameter is set the same on each node, 'ASMGRP1, ASMGRP2'. I don't
understand what might have caused these to differ. If anyone can assist 
I would appreciate it.

Thanks.

Bill Wagman
Univ. of California at Davis
IET Campus Data Center
wjwagman@xxxxxxxxxxx
(530) 754-6208

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