Starts an instance.
start instance [instance_name] [unlock]
specifies a unique name for an instance in the cluster.
If you do not enter a cluster name, sybcluster uses the instance specified in the sybcluster command line or specified with the use command.
removes the lock from a cluster that was terminated unexpectedly. The cluster must be down before using unlock.
WARNING! Do not use the unlock parameter unless you have verified that all instances in the cluster are shut down.
The instance must be down to use start instance unlock.
