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Memory leak with OutOfMemoryError exception

you will have to decrease the following default ObjectDB settings: Temporary data RAM threshold. Page

Run out of memory

the uncommitted changes persist in RAM (not the file db), hence I am getting out of memory exceptions

Performance tuning, best practices

we have a system where we serve from a host process around 200 clients connected via webSockets (Jetty). The core process is running on a dedicated Windows 2012 server with 16 GByte RAM and 8 processor cores. What is strange for us is that max 20% of the cpu resources are used and the IO subsystem

ObjectDB's Database Doctor Incorrect Error Report

was wasting a lot of RAM and resources like caching based on 256 KB when I only needed 64 KB based

Doctor - high memory usage

have at least 2GB RAM, I don't think that running the Doctor with 512MB max heap size should be a problem

Query Execution on parallel threads don't lead to performance improvements

, to reduce the use temporary files (although it may require more RAM). support Support

One transaction or two?

eliminates some overhead but may require more RAM if you have many large objects, and that may also affect

Java 9 support

and only 0.5 GiB of RAM) and the incredible abilities of ObjectDB ultra fast database technology

Duplicatable and Disposable JPA Repository for Unit Testing

it on a RAM drive to get the effect of a memory database. It would probably be faster than any

Objects are not garbage collected

. However, we can see that over time more and more NormalizedAccessPaths clog up the RAM and won't be released

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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