Thanks Kjetil. It was something to do with ASM_DISKSTRING parameter which was supposed to be /dev/oracleasm/disks/* and not /dev/oracleasm/disks Its working now! -Mohan 2010/11/18 Kjetil Strønen <kjetil@xxxxxxxxxx> > On Thu, 2010-11-18 at 17:07 -0600, Mohan wrote: > > Hi folks, > > > > I am facing this wierd ASM diskgroup issue. I am trying to add disks > > to already existing diskgroups data and fra and found the below error: > > > > SQL> alter diskgroup DATA add disk > > '/dev/oracleasm/disks/DISK3,/dev/oracleasm/disks/DISK4'; > > alter diskgroup DATA add disk > > '/dev/oracleasm/disks/DISK3,/dev/oracleasm/disks/DISK4' > > * > > ERROR at line 1: > > ORA-15032: not all alterations performed > > ORA-15031: disk specification > > '/dev/oracleasm/disks/DISK3,/dev/oracleasm/disks/DISK4' matches no > > disks > > <snip> > > Am I missing anything here? > > I think it might be as simple as > > alter diskgroup DATA add disk '/dev/oracleasm/disks/DISK3', > '/dev/oracleasm/disks/DISK4'; > > --Kjetil > > >