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JPA and handling large data sets

. But exporting large binary data sets is very slow. To avoid memory problems the binary data type is read step ... the way is slow. We have an own entity for storing binary data (pictures, documents). Hint

Lazy Init / Eager / Join Fetch collection strategy ? What to choose ?

://zeroturnaround.com/rebellabs/how-to-use-jpa-correctly-to-avoid-complaints-of-a-slow-application/ In this article ... , but may also consume too much RAM and becomes slow. Unfortunately there is no one best solution

Left join fetch behaviour doesn't retrieve children?

-of-a-slow-application/ ). Indeed for H2 + Hibernate that's the best solution ! And the worst for ObjectDb ... benchmarks to your test case, because buggy implementations could make the test right but slow

What algorithm in find()

? gzdillon Lai Yang Slow commit might be the result of not using enhancement and not calling clear ... When classes are not enhanced the persistence context cache slows commit / flush, since every entity

Index causes increased memory usage

, but that may slow performance. To understand the problem better you will have to provide information

cannot delete objects after crash (see issue 2283)

, it is more or less not acceptable to slow down the system like this hgzwicker Hans-Georg Zwicker File sync is a slow operation so this is expected. Although we cannot improve the speed of the sync

ObjectDB 2.8.7

Added an option to slow backup (see feature request #2681). Added an option to view old type versions in the Explorer (-Dobjectdb.ui.debug=true) Improved the Doctor (see issue #2691). Improved ... on a server to 2 seconds(see issue #2686). Fixed a bug in the new option to slow backup in client

Blocked by find

, this may just be slow performance rather than blocking. The attached test writes data to a db ... to maximise objectdb performance it'd be appreciated. felixobjectdb Richard Szurgot Extremely slow

ObjectDB 2.4.0

. Fixed handling null values in JOIN and path expressions in queries. Fixed a possibly very slow query

InternalException using 2.3.7_12

Support Sorry for the slow reply, I've been away for a couple of days. I have to many classes

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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