411 REFERENCE · Wikibooks
RAC Attack - Oracle Cluster Database at Home/Increase CRS Fencing Timeout (ASM)
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These steps are not necessary for a test or production environment. However they might make your VMware test cluster just a little more stable and they will provide a good learning opportunity about Grid Infrastructure.
Grid Infrastructure must be running on only one node to change these settings. Shutdown the clusterware on collabn2 as user root.
[oracle@collabn1 ~]$ ssh collabn2
Last login: Wed Mar 30 14:50:49 2011
Set environment by typing 'oenv' - default is instance RAC1.
collabn2:/home/oracle[RAC1]$ su -
Password: racattack
[root@collabn2 bin]# crsctl stop crs
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources
on 'collabn2'
CRS-2673: Attempting to stop 'ora.crsd' on 'collabn2'
CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on 'collabn2'
...
...
...
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'collabn2' has completed
CRS-4133: Oracle High Availability Services has been stopped.Return to node collabn1. As the root user, increase the misscount so that CRS waits 1.5 minutes before it reboots. (VMware can drag a little on some laptops!)
[root@collabn1 ~]# crsctl get css misscount
30
[root@collabn1 ~]# crsctl set css misscount 90
Configuration parameter misscount is now set to 90.Increase the disktimeout so that CRS waits 10 minutes for I/O to complete before rebooting.
[root@collabn1 ~]# crsctl get css disktimeout
200
[root@collabn1 ~]# crsctl set css disktimeout 600
Configuration parameter disktimeout is now set to 600.Restart CRS on the other node.
[root@collabn1 bin]# ssh collabn2
[root@collabn2 bin]# crsctl start crs
Install Grid Infrastructure (ASM) Setup ASM