15 | Queries are slow on a large database example, I want to get the object with the highest Id. I tried a query like "count(this.Id)" or "max(this.Id)" but I get an exception: [ObjectDB 2.5.0_01] ==> count <== (this.Id) javax.jdo.JDOUserException Invalid context for aggregate 'count' (error 743) (position 0) at com.objectdb.jdo.JdoQuery |
15 | Internal exception when updating date filed (TemporalType.DATE) { private final int GENERATE_PERSONS_COUNT = 1000; private EntityManagerFactory ... (); if (personsCount == 0) { createPersons(GENERATE_PERSONS_COUNT ... (); entityManagerFactory.close(); } private void createPersons(long count |
14 | Duplicate Entity class names causes Exception in Query FROM Item o WHERE o.cachedKey = :cachedKey"), @NamedQuery(name = "objdbTest.Singleton.count", query = "SELECT COUNT(x) FROM Item x") }) public class Singleton implements Serializable { public ... .Singleton.count", Long.class); q.setFlushMode(FlushModeType.AUTO); try { return q |
14 | Memory Leak in EntityManagerFactory ? but with no QPtBearbeiter instances? One direction forward is to count all the invocations of emf.createEntityManager and em ... and close_count are identical. I made create_count++ and close_count++ each synchronized. And in the end ... for the count, as it provides a local protection on the count only. The synchronized statement |
13 | Trouble viewing db in Explorer.="COUNT(this)" type="long" /> </validCachedQueryResponse> [2012-06-07 11:08:06 #47187 query.manager] <queryRequest query="SELECT COUNT(this) FROM com.***.busi nessObjects.***" args="null" transactionId="-1" /> [2012-06-07 11:08:06 #47187 query.manager] <queryRequest query="SELECT COUNT(this) FROM com |
13 | Possible issue with timestamps.getTransaction().commit(); TypedQuery<Long> query = em.createQuery("SELECT count(c ... , cdiCount.intValue()); query = em.createQuery("SELECT count(c) FROM CDI c where c ... ()); query = em.createQuery("SELECT count(c) FROM CDI c where c.creationDate > :startdate |
13 | how to query by properties of onetomany relations? (Error 990)(); Query query = em.createQuery( "select count(f) from Foo f where f.bars.name = :name"); query.setParameter("name", "aaa"); System.out.println("Count ... : select count(f) from Foo f where f.bars.name = :name select count(f) from Foo f join f.bars |
3 | DBDoctor BTree Errors.pool.PoolImpl - Unexpected page count: 958 (actual 1) - Unexpected object count: 9043 (actual 1) [2] com.btc.ep.architecture.bl.internal.dmos.pool.PoolScopeImpl - Unexpected page count: 8 (actual 1) - Unexpected object count: 392 (actual 1) [3] com.btc.ep.base.bl.internal.dmos.licensing |
2 | stress test -> com.objectdb.o.InternalException: null.objectdb.com/database/issue/new com.objectdb.o.InternalException: Negative snapshot user count com.objectdb.o.InternalException: Negative snapshot user count at com.objectdb.o.SNP.D(SNP.java:344 ... by its previous owner. The "Negative snapshot user count" error and a memory leak that its causes |
2 | Out of Memory - Slow leak? with some heavy objects that ObjectDB manages using reference counting. Somehow in an unknown situation the reference count drops to -1 and then the objects are pinned. Unfortunately after checking carefully ... an attempt to decrease the reference count below 0. In addition on such attempt it writes |
