Daniel - Can you post the entire stacktrace? You've snipped out the important parts.
Thanks, Rick On Mon, May 7, 2012 at 3:19 AM, Daniel Persson <[email protected]>wrote: > Hi. > > I'd used OpenJPA for my projects for a while now and started to use it at > work. > > Our service runs on Tomcat and have a lot of users. So after implementing > OpenJPA for a few months we are now in the testing phase. > During the stress test adding a few hundred records using different tomcat > threads I get the same OpenJPA error over and over. > > I've changed the configuration back and forth to resolve the issue. > Sometimes I get it to work for a while and then it breaks again. > So I would like to ask what the error could be a result of and if I have > any obvious configuration faults. > > I've written a small test class adding entities using 1000 threads and this > will generate the errors from time to time. > The code uses one factory and a lot of managers. > > <openjpa-2.1.1-r422266:1148538 fatal store error> > org.apache.openjpa.persistence.RollbackException: null > at > > org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:593) > > Caused by: <openjpa-2.1.1-r422266:1148538 nonfatal general error> > org.apache.openjpa.persistence.PersistenceException: null > at > org.apache.openjpa.kernel.BrokerImpl.afterCompletion(BrokerImpl.java:2018) > at > > org.apache.openjpa.kernel.LocalManagedRuntime.commit(LocalManagedRuntime.java:94) > at org.apache.openjpa.kernel.BrokerImpl.commit(BrokerImpl.java:1498) > at > > org.apache.openjpa.kernel.DelegatingBroker.commit(DelegatingBroker.java:933) > at > > org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:569) > ... 27 more > Caused by: java.lang.NullPointerException > > > <persistence xmlns="http://java.sun.com/xml/ns/persistence"; xmlns:xsi=" > http://www.w3.org/2001/XMLSchema-instance"; version="1.0"> > <persistence-unit name="userDbPersistence" > transaction-type="RESOURCE_LOCAL"> > <non-jta-data-source>java:comp/env/jdbc/userDb</non-jta-data-source> > > <class>......</class> > > <properties> > <property name="openjpa.Multithreaded" value="true" /> > <property name="openjpa.InverseManager" value="true" /> > <property name="openjpa.DynamicDataStructs" value="true"/> > <property name="openjpa.Compatibility" > > value="QuotedNumbersInQueries=true,CopyOnDetach=true,cascadeWithDetach=true,superclassDiscriminatorStrategyByDefault=false" > /> > <property name="openjpa.DataCache" value="true(CacheSize=1000, > SoftReferenceSize=0)"/> > <property name="openjpa.QueryCache" value="false"/> > <property name="openjpa.RemoteCommitProvider" value="sjvm"/> > <property name="openjpa.Log" value="DefaultLevel=WARN, > Runtime=WARN, Tool=WARN, SQL=WARN"/> > <property name="openjpa.FetchBatchSize" value="0"/> > <property name="openjpa.DetachState" > value="fetch-groups(DetachedStateField=true)"/> > <property name="openjpa.LockTimeout" value="3000"/> > <property name="openjpa.jdbc.EagerFetchMode" value="join" /> > <property name="openjpa.jdbc.SubclassFetchMode" > value="parallel" /> > </properties> > </persistence-unit> > </persistence> > > Any tips or suggestions are much appreciated. Have tried a lot of different > configurations. One requirement for the configuration as well is that we > want to use some sort of caching because this was one of the reason for the > shift to openJPA. > > Best regards > > Daniel > -- *Rick Curtis*
