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Object DB vs EclipseLink/TopLink: Unloaded relationships in detached entities

properties This has the big problem that one would need to tune queries for every preempted

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

for every situation, so you will have to test these options in your specific scenario to tune your application

Explorer in 2.3

, threads, query-cache, memory usage, etc...) to use for tuning b. Show all database connections

Crash due to memory problems

is to increase the JVM heap size (if possible) or tune the ObjectDB configuration. If ObjectDB recovery

How Should I Configure objectdb.conf to Obtain 256KB Disk IO Requests and Maximize Shared PersistenceManager Entity Cache?

(e.g. searching for an object in a larger page could take longer). So, as with most tuning

Several parallel threads to speed up query on one DB

by tuning the configuration (e.g. the maximum concurrent threads). support Support

Processing thread count for 8-core server

the range of 15-30 threads, but choosing the best value will require some tuning tests on your side, since it depends on the specific application. support Support

Use temporary files to enable very large transactions

to pass your test you will have to use the new build but also to tune the configuration as follows

Best practise loading big data

the database (i.e. the EntityManagerFactory). If you need an advice regarding tuning cache sizes

out of memory error

space). Increasing the JVM heap size could solve the problem, or alternatively, tuning ObjectDB

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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