Re: pessimistic locking

[Abe White]

We'd also have to set the LockManager property to pessimistic to get  
database locks.  And just to build on what Patrick is saying: OpenJPA  
can do locking within optimistic transactions on individual  
instances, but you have to set a lock level on the FetchPlan in code,  
which I don't think we can do in this benchmark.
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