Hi,

> 1) EntityManager: how many entities (and collections) are in 1st level
> cache?
OpenJPAEntityManager.getManagedObjects();

> 2) EntityManagerFactory: how many select / insert / update statements were
> executed within that SessionFactory?
You can attach a JDBCListener [1] (there is an abstract implementation
available)

[1]
http://openjpa.apache.org/docs/latest/javadoc/org/apache/openjpa/lib/jdbc/JDBCListener.html

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