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How to use JOIN FETCH?

addressHistory;   }   public void addAddress(Date start,Address address) {    addressHistory.put(start,address);   }   public String toString() {    return name + ":" + addressHistory
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Java 6/7 Performance Comparison

may have missed while running under java 7. long start = System.currentTimeMillis ... ("Load Time %s ms\n", (end-start)); Java 1.7.0_51-b13 (MacOS X) Output: Load Time 30629 ms Java 1.6.0
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Jboss 6 persistence.xml startup error

.AbstractKernelController] (WorkerThread#0[127.0.0.1:53209]) Error installing to Start: name=persistence ... the objectdb-jee.jar) is attached. Just drop it in the JBoss's deploy directory, start JBoss (run
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JVM crash when using IBM JDK 1.6.0

for IBM J9 VM starting build 2.2.6_02. Thank you for your report.     This fixed the GPF crash. I ... during start. Is that the expected behavior without the Unsafe optimization? It is the expected behavior
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Listing large number of complicated objects with paging.

.setFirstResult(start).setMaxResults(count).getResultList(); is quite slow. Well, after first request ... .hplxtool.dao.impl.ProductDAOImpl - Start: 250, count: 50 2011-11-15 19:31:03.219 [http-bio-8080-exec-3
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Mapped By Fetch is very Slow

();   Long start = new Date().getTime();     TypedQuery query = em.createQuery("SELECT m FROM ... - start) / 1000;   System.out.println("Duration : " + duration + " seconds");     em.close
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Monitoring and Performance counters

After checking last patch from build 2.1.1_01, I started to think about some kind o monitoring tools in ODB. Those tools could look similar to MySQL 'show innodb status', where you can get some ... last start - caches hit rate - total sessions from clients - memory usage (for heap space tuning
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Mysterious "Attempt to persist a reference to a non managed instance" error

I've been working with ObjectDB for the past several months, and it's behaved pretty much as expected. I made a few modifications to a working set of classes today, and it's started throwing ... );       em.persist(oo);         tx.commit();     } } I had started with the expectation
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Negative snapshot user count

the full log in case it helps (sorry I should have attached it from the start). The following ... = 0; i < COUNT; i++)             threads[i].start();         for (int i = 0; i < COUNT; i
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Negative snapshot user count exception

this start? is there anything that you think may be related (a change in your application or in ... , and today at 10:14 AM PDT we started getting the mismatch client-server protocol prefix failure