Correct, I am planning to use a shared Solaris NFS drive to use as the shared 
filesystem. What I am trying to figure out is if I can reliably get optimistic 
locking to work between different nodes in a cluster.

For example, we have optimistic locking enabled with the following situation:
Node A gets a copy of the tree node and prepares to write some data into the 
cache.
Meanwhile, Node B gets a copy also and writes its changes before Node A does.

What I want to know, is what will Node A do? Will it fail/rollback? Can its 
internal version for the GlobalTransaction be smart enough to know that Node B 
wrote some changes before it.

Any help would be appreciated.

Ray

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