About slow

71-80 of 86Refresh
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Selective merge/cascade of detatched entity

to this with me, Phil Thank you for the test program. It definitely demonstrates activity that is too slow
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Should I be able to persist a JFrame (or gui components in general)?

" interfaces like this, so that I am not spending a long time (I'm slow) programming what I'll call "mapping
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Should I use ObjectDB and JDO?

than JPA because I am storing objects to avoid apparent relative slowness of relational databases).  I want
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significant performance decrease

An additional index on childNodes should help. If it is still slow, try also composite indexes
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Storing Images and Object Pooling

(); Producing everytime ResultList ( Garbage collection destroy and remake ) slows apps i think. I think
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Suspected memleak caused by bad state of EntityManager

Our application manages the Entities itself, so we close the EntityManager after every creating and using. We find a slow memleak in our application recently, and by trace of Entity construct and finalize, we found the problem is caused by bad state of EntityManager. After first throwing
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1

Threaded Test - Failed to commit transaction: Unexpected internal exception

 - temporary files are used, which is very slow. I found out that using the following hint helps
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To open source, or not to open source

Hi, We are currently using db4o with a commercial licence, but finds it very frustrating after they have been taken over by Versant. The development of db4o is going very slow and major bugfixes are not been backported to stable releases, but only put into bleeding edge branches
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Update Entity references if we change the type of an entity

well as its subclasses and your sample test passes. However, please note that: It may slow
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Use temporary files to enable very large transactions

only if there are no other options. It is also slow. A much better solution (faster and with unlimited