Let's say you have a service group for Oracle. You include the
diskgroup, volumes, mount point(s), IP address, Oracle application and
listener.

You also have aother program that runs and reports on the number of
users connected to Oracle (and if this gets above a certain number, you
page your DBA).

If a resource is marked as Critical (thus Critical = 1), which is the
default (so even ifyou don't see anything in the main.cf , it is set to
1), if this resource fails, the service group will fail over.

Example:

If Oracle fails, you want the service group to fail over to the other
machine(s) in the cluster.

The last "monitor" program is not critical to the Oracle application.
Thus, if this monitor fails, you don't want the whole thing to fail. So
the monitor would be marked as "Critical = 0"



In short, if any resource in the service group is marked as Critical,
the service group will fail-over if that resource fails




noobie wrote:
> Sorry for asking such a stupid question:
>
> If the 'Critical' value for a resource in main.cf is set to 0, in the event
> that this resource fails will the value being 0 determine that a failover
> will occur?