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connection pooling

port="6136" max="100" /> The <connection> element specifies how clients can connect to the server ... Overview section in chapter 3). The max attribute specifies the maximum number of simultaneous

Performance problem

one running JBOSS and other running ObjectDB. - CPU utilization of JBOSS server is max 5-10 ... are unclear. For example: - CPU utilization of JBOSS server is max 5-10% (per core) - CPU

Inserted entities with strings as keys and indices needs more and more ram memory in comparing to primitive integers as keys and indices

needs only more ram memory, but not more and more memory. And if the max heap memory is big ... the program with a smaller max heap size? support Support If I reduce indeed the RAM to 1 GB the example

How to open a running db in ObjectDB Explorer?

to your objectdb.conf file: <server>   <connection port="6136" max="0" />   <data path ... the instructions. Here is how my configuration looks like: <server> <connection port="6136" max="0

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

on an Amazon EBS disk which has max performance at that size and reduces monetary fees by having ... packet requests to the datastore file (because it is stored on an Amazon EBS disk which has max

Wrong select results

="." max="128mb" /> <recording enabled="false" sync="false" path="." mode="write" /> <locking version-check="true" /> <processing cache="1024mb" max-threads="8" /> <query-cache results="1024mb" programs


Configuration is default: <processing cache="64mb" max-threads="10" /> <query-cache results="32mb" programs ... running ObjectDB with the following configuration:     <processing cache="64mb" max-threads="10

A bug in the JDOQL processor in recent versions of ObjectDB

There seems to be a bug in the JDOQL processor in recent versions of ObjectDB. I've uploaded a "laptop" example to demonstrate the problem. The query in Test1.main should return "ThinkMachine MAX SX ... ) correctly return "ThinkMachine MAX SX 20". Regards. kk8yukawa Keitaro Yukawa Thank you for this report

Threaded Test - Failed to commit transaction: Unexpected internal exception

of each put or take so I wouldve thought the max data I'm holding should be around 20mb (5 consumers * 5 producers * 2mb) and when the consumers alone are running this should drop to a max

Unexpected exception when execute query without enhanced entities

ObjectDB 2.8.7.b08 Our entities are not enhanced and we execute a query "select max(uid) from ModelElementImpl". In the objectdb.conf the reflection is set to error. <entities ... ();         List resultList = em.createQuery(             "select max(uid) from MyEntity

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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