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9

Left join fetch behaviour doesn't retrieve children?

("Number of children = " + myEntity.getEntityChildren().size());         }     }     @Entity ... = "      + myEntity.getEntityChildren().size());   } } @Entity public static class MyEntity {   @Id ... retrieved Duration : 22 seconds LAZY INIT on call size() on each collection ( 5 collections ) Start
9

Degrading performance overtime

-timeout="0" /> <url-history size="50" user="true" password="true" /> <log path="$objectdb/log ... ="21" /> <logger name="*" level="info" /> </general> <database> <size initial="51200kb ... size, you may start with that size as an initial database size, avoiding resize operations
9

Memory leak with OutOfMemoryError exception

heap size (128MB) and this is not sufficient. You may try increasing the Java heap size by running ... cache size Query results cache size support Support Upping the max heap size to 256M has solved this problem. Thank you! banglo mohammad haroon
8

Objectdb server out of heap space

that run on Java JVM, such as the ObjectDB server, are limited to the maximum heap size of the JVM, so they cannot have full control of resources. However, you can easily increase the maximum JVM heap size ... , if it is to be reliable, should be able to monitor memory use, and check the sizes of requests for data so as
8

Performance and memory usage of queries

, so ObjectDB needs RAM in the size of the database itself. Obviously deleting the entire database file ... files also to enable very large transactions. Currently the size of the transaction (i.e. the total size of database pages that have to be replaced) is limited by the JVM heap size. support Support
8

Ram allocation

of the database. By increasing the ObjectDB cache sizes in the ObjectDB configuration, as long as ... , we can allocate objectDB cache size to 128GB? thanks nedim.selmanovic Nedim Selmanovic Maybe better ... Theoretically, the main ObjectDB page cache can use 4TB with the default page size of 2KB
8

EntityManagerFactory Fails To Swtich Over To Slave When Master Is Unavailable

size="50" user="true" password="true" />                 <log path="$objectdb/log/" max="8mb" stdout ... >                 <size initial="256kb" resize="256kb" page="2kb" />                 <recovery enabled="true ... inactivity-timeout="5" />                 <url-history size="50" user="true" password="true
8

Failed to commit transaction: Java heap space (error 613)

: a) What do you suggest to fix the issue above at the root - other than increasing heap size (currently not ... threads) if this happens again. To avoid this issue without increasing heap size ... (server side) cache size Query cache size Client side cache settings You may try each
8

Eager Fetch is not stable for collection or map types?

.setParameter("id", id).getResultList();     if(result.size() > 0) {       Game g = result.get(0 ... a mehtod such as size() of collection or map before closing the EntityManager, data can be retrieved ... ).getResultList(); if(result.size() > 0) { Game g = result.get(0); logger.debug("[trace
1

java.lang.NullPointerException during access a field, only if the classes enhanced

) at com.objectdb.o.ISP.size(ISP.java:174) at java.util.HashSet.<init>(Unknown Source ... .NullPointerException at com.objectdb.o.ISP.size(ISP.java:175) at com.objectdb.o ... .objectdb.o.IVP.m(IVP.java:155) at com.objectdb.o.IVP.l(IVP.java:137) at com.objectdb.o.ISP.size

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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