[jboss-user] [JBoss Cache: Core Edition] - Re: JPA/Hibernate JBC usage

[manik.surtani@jboss.com]

"zeravlai" wrote : 1- If the transaction already has a read lock on the entity (which is acquired by an EntityManager.find() ) the read lock will be INMEDIATELY upgraded to write lock, EVEN if there's a concurrent transaction which already has a read lock on the same entity.
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Can you confirm that this is with R_R or R_C?  Also, could you pls confirm the JBC version used and that you are using pessimistic locking?

Do you also have this problem with MVCC?

Cheers
Manik




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