File System configured incorrectly for ODM shuts down Oracle
Linking Oracle RDMS with the Veritas ODM libraries provides the best file system performance. See See Relinking the SF Oracle RAC libraries to Oracle for instructions on creating the link.
If ODM cannot find the resources it needs to provide support for cluster file systems, it does not allow Oracle to identify cluster files and causes Oracle to fail at startup.
To verify cluster status
Run the command:
# cat /dev/odm/cluster
cluster status: enabled
If the status is "enabled," ODM is supporting cluster files. Any other cluster status indicates that ODM is not supporting cluster files. Other possible values include:
pending
|
ODM cannot yet communicate with its peers, but anticipates being able to eventually.
|
failed
|
ODM cluster support has failed to initialize properly. Check console logs.
|
disabled
|
ODM is not supporting cluster files. If you think it should, check:
-
/dev/odm mount options in /etc/vfstab . If the nocluster option is being used, it can force the disabled cluster support state.
-
Make sure the
VRTSgms (group messaging service) package is installed.
|
If /dev/odm
is not mounted, no status can be reported.
To start ODM
-
Execute:
# /etc/init.d/vxgms start
-
Execute:
# /etc/init.d/vxodm start