> Has anyone tried setting up an Oracle RAC installation? It is
documented
> in the new Oracle/zLinux Redbook, just wondering what experiences
anyone
> had. Thanks, RF

Works as documented, or as well as RAC ever does. 

For it to be any use for survivability, you really need to do it in a
CSE environment with two systems or LPARs and split the cluster members
across the two instances. Shared DASD is necessary, which is complicated
to set up and maintain with FCP disk. Networking really needs to do
layer 2 VSWITCH with VLANs managed by goodly sized switches between the
machines to do the heartbeats efficiently. 

Short version: it's as much of a PITA to manage as RAC is on discrete
systems. Given that the underlying infrastructure (CSE, VM, System Z) is
orders of magnitude more reliable and stable than the discrete system
approach, it's probably overkill for anything short of absolutely
critical systems (which, IMHO, are the principal justifying reason for
z/OS parallel sysplexes, and once you have a parallel sysplex in play,
we're talking about a whole 'nother level of RAS, and RAC is pretty
pathetic in that arena).

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