[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - EJB2 findByPrimaryKey caches sometimes but not others.

[chrismm]

We have two entity beans that are accessed via their findByPrimaryKey methods. Both beans have the same container configuration and are executed 10 times within a single transaction. 
By turning on CMP tracing we can see that for the first bean one line of sql is executed against the database (ie the container is caching - as expected) for the second bean 10 lines are executed ?, what could cause this ? ie how does the container decide when not to cache an entity bean that is looked up by pk ?
 

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