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Persist not working when ObjectDB and another db is used in the same application (through spring) with different tx managers

.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www ...         http://www.springframework.org/schema/context         http://www.springframework.org/schema/context/spring-context-3.0.xsd         http://www.springframework.org/schema/mvc         http://www
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Queries are slow on a large database

get an exception: [ObjectDB 2.5.0_01]  ==> count <== (this.Id) javax.jdo.JDOUserException Invalid context ... ="objectdb" key="index" value="name"/>
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@Unique member combination not working

','Doe')) Thanks, it worked. I was using servlet context because I thought that using static ... the same as with keeping the EntityManagerFactory in the servlet context. Maybe you had an old EntityManagerFactory in the servlet context without the Unique? Notice that adding Unique to an existing
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Caching/Paging Questions...

size of ObjectDB L2 cache or EntityManager context ? Q4: Would paging result sets ... memory ? Regards Query execution is not affected directly by the content of the persistence context ... will be used automatically until the persistence context is cleared. For cache purpose - consider soft
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Closed EntityManagerFactory after upgrading glassfish 3.1.1 to 3.1.2

) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1760) at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:129) at javax.faces.context ... more It seems that there is something wrong with persistent context. it seems that glassfish 3.1.2 behaves
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JSON serialization and __odbHidden members

{ @SuppressWarnings("unused") @Context private UriInfo context; @Context HttpServletRequest request
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NullPointerException while setting a new property value

context are not required to be threadsafe. Entity managers must only be accessed in a single-threaded manner." Actually there is an attempt to provide thread safe EntityManager and persistence context ... , but be aware that entities (which are part of a persistence context) are also not expected to be shared by threads, except maybe after detachment. Cabot
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package not found running ObjectDB under OSGi

:  @Override     public void start(BundleContext context) throws Exception {         super.start(context);                 ClassLoader classLoader =   context.getBundle().loadClass("datamodel.core
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Removing of an entity removes also another entity type

. For example, the  EntityManager may not be aware that a cached entity object in its persistence context ... a big context. But we found the reason of this issue. We used one transaction and our entities ... that a cached entity object in its persistence context has been removed from the database by a DELETE query
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Sample JDO Architecture for Follow Up Questions

, but to answer the questions, an understanding of the proposed architecture (i.e. a proper context ... to this architecture for their context. * I attached an architecture diagram that summarizes ... but minimize thread context switching overhead. Each thread has queues for the database requests