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Removing an entity throws exception

it. support Support Thank you for fast response. The fix changed the number 51 to 34. But it looks like my db

How to Use a SF with extended Persistence Context?

Hey, I have a problem to use SF with an Extended Persistence Context Regarding to Transactions. The need for an extended persistence Context emerges for the need to create queries in advance for fast execution so I need to store the queries and I need an EntityManager that doesn't get closed

Selective merge/cascade of detatched entity

was forced to work with reasonably low numbers of objects. If this completes too fast on your machines, try

Waterfall tree algorithm for more optimized version of objectdb or

/waterfalltree/overview the documentation tells , it makes db very fast here is algorithm on youtube : http

How to track memory leak with ObjectDb.

Hello, I suspect some memory leak in my application. ( turning app into OOM very fast ) In fact, some com.objectdb.o.MST objects are retaining a huge % of my heap space. While watching the dump file ( with Eclipse MAT ), i was not able to inspect carrefully the memory leak issue

in-memory and on-disk support?

I've had a quick read through the features/FAQ and haven't been able to find a clear answer. I'm looking at replacing a setup of H2 where I have 40GB in-memory backed by 800GB on-disk, the 40GB in memory represents the first 40GB of the 800GB on-disk for super-fast recent entry searching

Dirty checking

transaction. btw: given how fast ObjectDb is, this is a great use-case for your technology

Navigation to Collection Elements

. support Support Thank you for your fast reply. I really meant it to be done in JPA/JDO queries

queries under 2.7.6_4 significantly slower than under 2.7.6

is fast with no need for query hints. This also helps in similar issues (e.g. issue #2379). support Support

Issue with DISTINCT Select

is again a full show stopper for us we cannot work around :(( thanks for fast help!! Alex quasado

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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