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14

significant performance decrease

" user="true" password="true" /> <log path="$objectdb/log/" max="8mb" stdout="false" stderr="false ... ="true" sync="false" path="." max="128mb" /> <recording enabled="false" sync="false" path="." mode="write" /> <locking version-check="true" /> <processing cache="2048mb" max-threads="10
14

config optimizing

" user="true" password="true" /> <log path="$objectdb/log/" max="8mb" stdout="false" stderr="false ... " path="." max="128mb" /> <recording enabled="false" sync="false" path="." mode="write" /> <locking version-check="true" /> <!-- cache: 2048mb/8GByte RAM, 4096mb/16GByte RAM, 8192mb above --> <!-- max
14

Performance tuning, best practices

processor cores. What is strange for us is that max 20% of the cpu resources are used and the IO subsystem ... ="$objectdb/log/" max="8mb" stdout="false" stderr="false" /> <log-archive path="$objectdb/log/archive ... ="256kb" page="2kb" /> <recovery enabled="true" sync="false" path="." max="128mb" /> <recording enabled
13

Soft Reference Object Cache Recommendation

="1mb" max-threads="10" /> <query-cache results="16kb" programs="10" /> <cache ref="soft" level2="0 ... for you. I use this ObjectDb.conf setting: <processing cache="1mb" max-threads="10" /> The test ... option. I use the "generation one" garbage collection option and explicitly set the min and max heap
13

Connection is closed Caused by: java.io.EOFException

/ObjectDB" threshold="64mb" /> <network inactivity-timeout="0" /> <log path="$objectdb/log/" max ... " page="2kb" /> <recovery enabled="true" sync="false" path="." max="128mb" /> <recording enabled ... cache="64mb" max-threads="10" /> <query-cache results="32mb" programs="500" /> </database
13

Replication failed

="64mb" /> <network inactivity-timeout="0" /> <log path="$objectdb/log/" max="8mb" stdout="false ... " /> <recovery enabled="true" sync="true" path="." max="128mb" /> <recording enabled="true" sync="false" path="." mode="write" /> <locking version-check="true" /> <processing cache="128mb" max
13

First query takes 4+ minutes to complete

="50" user="true" password="true" /> <log path="$objectdb/log/" max="8mb" stdout="false" stderr ... enabled="true" sync="false" path="$objectdb/" max="512mb" /> <recording enabled="false" sync ... ="256mb" max-threads="10" /> <query-cache results="64mb" programs="50" /> <extensions drop="temp
13

locks on pure query activities

" /> <url-history size="50" user="true" password="true" /> <log path="$objectdb/log/" max="8mb" stdout ... " /> <recovery enabled="true" sync="false" path="." max="128mb" /> <recording enabled="false ... " max-threads="48" /> <index-update enabled="true" priority="40" /> <query-cache results
13

Out of memory

/" max="8mb" stdout="false" stderr="false" /> <log-archive path="$objectdb/log/archive ... " /> <recovery enabled="true" sync="false" path="." max="128mb" /> <recording enabled="false ... " /> <processing cache="64mb" max-threads="64" /> <query-cache results="256mb
13

ObjectDB Enincompatible with Quarkus?

/log/" max="100mb" stdout="false" stderr="true" /> <log-archive path="$objectdb/log/archive ... initial="5mb" resize="5mb" page="2kb" /> <recovery enabled="true" sync="false" path="." max ... version-check="false" /> <processing cache="100mb" max-threads="4" /> <query-cache

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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