The configuration looks correct. Data cache for read-only case surely should show up as performance improvement. The quick sanity check will be to trace the SQL statements issued by OpenJPA. In fact if your performance probe is reading same set of instances repeatedly, there should be no SQL issued by OpenJPA once the instances are in datacache.
<property name="openjpa.Log" value="SQL=TRACE"/> will enable tracing of SQL. Also, one can simplify by removing all reference to naming data cache as then a default cache will be used. -- View this message in context: http://www.nabble.com/Data-cache-usage--tp14623378p14809204.html Sent from the OpenJPA Users mailing list archive at Nabble.com.
