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UserException - Object User#2 belongs to another EntityManager

Hi! Scenario's steps: 1. User goes to his profile, a JSF page. 2. @RequestScoped CDI bean UserDataB loads the current user of the session at each request, by using @Stateless bean UserC#findUserById(Long id) 3. JSF page's @RequestScoped CDI bean AnotherB loads trades of that user, by using

Performance and memory usage of queries

    em.getTransaction().commit(); On update ObjectDB prepares all the revised pages in memory before ... size of database pages that have to be replaced) is limited by the JVM heap size. support Support

exceeds evaluation limit Exception

persistable types (e.g. entity classes) with no license key. As noted on the license page: ObjectDB ... may apply for a free commercial license, as explained on the license page. Larger companies

Replication error on slave restart

" /> </general> <database> <size initial="256kb" resize="256kb" page="2kb" /> <recovery ... " resize="256kb" page="2kb" />   <recovery enabled="true" sync="false" path="." max="128mb

how to query by properties of onetomany relations? (Error 990)

More details are provided on the FROM page of the ObjectDB manual. support Support i just woke ... persitencece.xml and in other scopes. More information is provided on the Query Setting and Tuning page

Which storage fits best to ObjectDB?

Jakab The ObjectDB database file is a container of pages, and only pages that ObjectDB needs

virtual servers and one file

> <size initial="16mb" resize="16mb" page="2kb" /> <recovery enabled="true" sync="true" path="." max ... > <database> <size initial="16mb" resize="16mb" page="2kb" /> <recovery enabled="true" sync="true" path

Updating Entities

query manual page: Updating entity objects in the database using an UPDATE query may be slightly ... of JPA. See this manual page. You should have read it in the manual rather than finding it by exploring

ObjectDB 2.6.4

Added memory only database mode. Added an option to cascade detachment to embedded objects. Added an option to disable reuse of database page objects. Improved release of query resources. Improved ... of embedded objects to collections. Fixed database page objects reuse to release to be cleared

Errors in log to repprt

] RetrievalTask.reportSecondaryResult: page#40133800, reader.getPos() = 62 [2019-09-27 09:49:08 #6 store ... ] RetrievalTask.reportSecondaryResult: page#40096905, reader.getPos() = 62 [2019-09-28 06:42:21 #9 store

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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