Why ?
To do activity for Oracle database like patching , upgrade or switchover/failover ..etc and this sever is running on Sun cluster HA services , you have to do disable/enable and monitor/unmonitored for certain services configured in your cluster resources and group.
How ?
Below are most important commands you may need to use in Sun Cluster management :
1- Checking Cluster group status:
clrg status
=== Cluster Resource Groups ===
Group Name Node Name Suspended Status
---------- --------- --------- ------
Group_res Server1 No Online
Server2 No Offline
2- Check Cluster resources details of the group :
clrs status
=== Cluster Resources ===
Resource Name Node Name State Status Message
------------- --------- ----- --------------
DB-srv Server1 Online Online
Server2 Offline Offline
DB-lsnr Server1 Online Online
Server2 Offline Offline
Ip_HA server1 Online Online - LogicalHostname online.
server2 Offline Offline
DB_zfs-rs server1 Online Online
3- Stop/shutdown certain recourse
clrs disable DB-srv
clrs enable DB-srv
4- Disable the cluster management for certain resource
clrs unmonitor DB-srv
clrs monitor DB-srv
5- Show configured things in resource :
clrs show -v DB-srv
6- Switchover to server2
clrg switch -n server2 Group_res
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