Storage Administration - Oracle Exadata Recipes: A Problem-Solution Approach - page 264

Perform this step on each compute node and when complete, reboot your servers.

■ Compute server reboots are not specifically required, but we recommend doing this to ensure that no oracle
ClusterWare resources are attempting to start.

Note

Next, start Oracle CRS on one node with the -excl -nocrs flags. This will attempt to start CRS resources
without CRS on a single node and will allow you to manually start an Oracle ASM instance. My Oracle Support note
1062983.1.1 provides more information on how and why this works:

[root@cm01dbm01 ~]# /u01/app/11.2.0.3/grid/bin/crsctl start crs -excl -nocrs
CRS-4123: Oracle High Availability Services has been started.
CRS-2672: Attempting to start 'ora.mdnsd' on 'cm01dbm01'
CRS-2676: Start of 'ora.mdnsd' on 'cm01dbm01' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'cm01dbm01'
CRS-2676: Start of 'ora.gpnpd' on 'cm01dbm01' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'cm01dbm01'
CRS-2672: Attempting to start 'ora.gipcd' on 'cm01dbm01'
CRS-2676: Start of 'ora.cssdmonitor' on 'cm01dbm01' succeeded
... output omitted for brevity
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'cm01dbm01' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'cm01dbm01'
CRS-2676: Start of 'ora.asm' on 'cm01dbm01' succeeded
[root@cm01dbm01 ~]#

After CRS is started in exclusive mode, log in as your Grid Infrastructure owner, connect to SQL*Plus as SYSASM ,
and validate your ASM disk groups. At this point, you will not have any created:

[grid@cm01dbm01 ~]$ sqlplus / as sysasm
SQL*Plus: Release 11.2.0.3.0 Production on Thu Sep 13 14:38:38 2012
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> select name from v$asm_diskgroup;
no rows selected
SQL>

Create the DBFS_DG ASM Disk Group to Store the OCR and Voting Disks
Next, create your DBFS_DG ASM disk group:

SQL> create diskgroup DBFS_DG
normal redundancy
disk 'o/*/DBFS_DG*'
attribute 'compatible.rdbms' = '11.2.0.3.0',
'compatible.asm' = '11.2.0.3.0',