About slow

81-90 of 102Refresh
Issue
1

500Mb ObjectDb database opening issue

Hi, I have observed that 500 Mb objectDb database opening time is very slow (~3 seconds) for following code long time = System.currentTimeMillis(); m_EntityMgrFactory = Persistence.createEntityManagerFactory( "objectdb:" + aFilename ); m_EntityManager = m_EntityMgrFactory.createEntityManager
Issue
1

again merger missing logs + objectdb exception

is needed. With no ability to reproduce the problem (yet) progress is slow, but we are getting closer
Issue
1

ArrayIndexOutOfBounds with Critera API and function call

recommended because: It is non standard JPA extension. It is inefficient (slow). But it should work
Forum
1

Bulk Delete and Update - best practice?

) but this is painfully slow when there is a high number of large objects. Currently transactions are limited
Forum
1

significant performance decrease

An additional index on childNodes should help. If it is still slow, try also composite indexes
Forum
1

Storing Images and Object Pooling

(); Producing everytime ResultList ( Garbage collection destroy and remake ) slows apps i think. I think
Forum
1

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
Issue
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
Forum
1

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
Forum
1

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