About slow

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Forum
1

Is 2 level cache in use?

the L2 cache may slow the application because of the overhead in keeping it up to date and the memory
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1

Is it ok to put list or map of embeddable objects in entity ?

would not be very efficient). I am not sure how ORM JPA implementations handle this. About the slow lazy
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1

Is it possible to remove parent/child entities without refresh?

We have a big entity object tree in our project. If I use the entityManager.remove(childEntity) method to remove a child entity a entityManager.refresh(parentEntity) is necessary in order to have an updated parent/child object tree in memory. But entityManager.refresh is too slow for our project
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1

Join query problem with new statetment

, but is quite slow - that is expected, because of some high number of objects to download. I forget
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1

JPA Configuration without persistance.xml

Hi,   I've been using Hibernate with JPA, and found it too slow, so am moving my project to use ObjectDB. My Jar is being held inside another application, so I don't want to have to rely on a persistance.xml file being in a particular place. When using Hibernate, I was able to do the following
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1

Listing large number of complicated objects with paging.

.setFirstResult(start).setMaxResults(count).getResultList(); is quite slow. Well, after first request
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1

Low performance when getting grove roots

with the same DB, I see the original behavior (working but slow).   Providing the test case would take some time.   Regards, Vladimir tsichevski
Forum
1

Navigation to Collection Elements

] ? If such navigations in queries lead to performance penalty, how slow is it and would you recommend
Issue
1

query.getResultList() throws ClassCastException

'id' before 'commit'.  This caused the ID lookups on non-existent entities to be "slow
Forum
1

Remove a modified entity cause an optimistic lock exception

your question, but the size of the OSGI test case makes progress very slow. Thanks for writing a minimal