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forum_thread

Does ObjectDB support lazy loading?

I'm evaluating ObjectDB 2.0 RC1. Everything works fine except a lazy loading problem. I've a Parent class which contains List<Child>, marked with @OneToMany. After persisting a Parent object, (in the Explorer) I can see all the property values of the Child objects in the list. However, when the Parent object is read from EntityManager, all the properties except ID of the Child objects are null. The EntityManager is not yet closed when the getters are called.... works, but then I change the main method as follow, and execute java ... LazyTest persist java ... LazyTest find The find ...

 
issue

[ObjectDB 2.4.1] Unexpected exception (Error 990) on getObjectById

In this code: String id = "my key"; itemDb = pm.getObjectById(ABC.class, id); I get this: Bug Version: 2.4.1 Priority: Normal Status: Closed Replies: 3 Type:  Bug ...

 
forum_thread

Dirty checking

Hi, wondering if anyone knows the best way to detect which objects have been changed in the database. ie: which objects, and which collections of objects, have been dirtied.     ... ie I can guarentee that no other transactions will execute until I've generated the readonly observable view queries, if that ...

 
issue

again merger missing logs + objectdb exception

we are facing similar problems as we had before, in the log we have a lot of entries merger ... missing + an objectdb exception. Some objects in the system behave strange. This is a part of the log: ... [2017-09-26 12:16:14 #1222 store] SectionClassifier: SectionClassifier{238146996->merger[3309]-missing:1} [2017-09-26 12:16:25 #1223 store] SectionClassifier: SectionClassifier{238146996->merger[3309]-missing:1} Bug Version: 2.7.1 Priority: Critical Status: Active Replies: 24 Type:  Bug ...

 
release

2.0.5

Release date: 2011-02-06 Download (3.4 MB) Binary:  objectdb-2.0.5.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

Occasionally slow requests in load testing

We are running load testing against objectdb version 2.3.7_18. The performance is generally OK, however there are quite a few "spikes" in the performance where we are getting a lot of very slow response times from the DB, around 10 - 15 seconds. Looking at the DB server process with AppDynamics we can see that most of the requests get stuck in one of 2 places: com.objectdb.o.PGC:w: line number 232 com.objectdb.o.LFL:U: line number 1068 Please see the attached callgraph examples for full stack trace examples. #1 2012-04-26 12:56 We are running load testing against objectdb version 2.3.7_18. The performance is generally OK, however there are ...

 
forum_thread

Why the internal error was thrown?

com.objectdb.o.InternalException at com.objectdb.o.CCH.H(CCH.java:298) at com.objectdb.o.CCH.E(CCH.java:155) at com.objectdb.o.QRM.Vo(QRM.java:226) at com.objectdb.o.MST.Vo(MST.java:988) at com.objectdb.o.WRA.Vo(WRA.java:311) at com.objectdb.o.WSM.Vo(WSM.java:115) at com.objectdb.o.QRR.g(QRR.java:247) at com.objectdb.o.QRR.f(QRR.java:153) at com.objectdb.jpa.JpaQuery.getResultList(JpaQuery.java:719) #1 2016-07-08 09:28 com.objectdb.o.InternalException at com.objectdb.o.CCH.H(CCH.java:298) at com.objectdb.o.CCH.E(CCH.java:155) at com ...

 
forum_thread

JPA and handling large data sets

This is not a rellay ObjectDB problem, rather a JPA problem. Our web-based DB supports Hibernate or JPA (ElicpseLink/ObjectDB). We implemented a export/import class to export the whole database or single datasets (domains) in a persistence layer/database independent format. This class works fine - DB exports form a Hibernate/MySQL base via the independent formt to ObjectDB is possible. But exporting large binary data sets is very slow. To avoid memory problems the binary data type is read step by step during the export with the  query/setFirstResult() & setMaxResults(). #1 2014-08-06 16:06 This is not a rellay ObjectDB problem, rather a JPA problem. Our web-based DB supports Hibernate or JPA (ElicpseL ...

 
release

2.0.3

Release date: 2010-12-13 Download (3.4 MB) Binary:  objectdb-2.0.3.zip ObjectDB 2 is already in use in production in several applications and is m ...

 
issue

javax.jdo.JDONullIdentityException: The identity must not be null.

When stopping my JEE 6 Web Profile application in Glassfish 3.1.1, I sometimes get this exception, yielding in not merging athene.odb and athene.odb$. A bug in objectdb?    bjjl@ps2:~$ ls -l /var/db/athene/ total 122080 -rw-r--r-- 1 bjjl webservd   2621440 2012-05-24 16:40 athene.odb -rw-r--r-- 1 bjjl webservd 122265952 2012-05-24 16:40 athene.odb$ bjjl@ps2:~$   ... this crash, the database seems to be corrupted, I cannot execute my pages anymore after restart of the web ...