Alex, Yes, asm_diskstring is not set on either node SQL> show parameter asm NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ asm_diskgroups string ASMGRP1, ASMGRP2 asm_diskstring string asm_power_limit integer 1 I did check and all the oracleasm rpm's are present and installed, although whether or not correctly I don't know. I also looked at the alert log and on the first node found occurrences of the error... ORA-15183: ASMLIB initialization error [driver/agent not installed] ORA-15183: ASMLIB initialization error [/opt/oracle/extapi/32/asm/orcl/1/libasm.so] ORA-15183: ASMLIB initialization error [driver/agent not installed] I did find Metalink note 340519.1 which suggests reinstalling the RPM's and rebooting both nodes and see if the problem is resolved. Unless you, or anyone else, has some other thoughts I will give that a try. Thanks. Bill Wagman Univ. of California at Davis IET Campus Data Center wjwagman@xxxxxxxxxxx (530) 754-6208 -----Original Message----- From: Alex Gorbachev [mailto:ag@xxxxxxxxxxxx] Sent: Wednesday, April 02, 2008 5:49 PM To: William Wagman Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: Trying to understand an ASM discrepancy 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 > > -- > //www.freelists.org/webpage/oracle-l > > -- //www.freelists.org/webpage/oracle-l