Searching for Openjpa Database Support information? Find all needed info by using official links provided below.
https://openjpa.apache.org/builds/1.2.3/apache-openjpa/docs/ref_guide_dbsetup_dbsupport.html
OpenJPA can take advantage of any JDBC 2.x compliant driver, making almost any major database a candidate for use. See our officially supported database list in Appendix 2, Supported Databases for more information. Typically, OpenJPA auto-configures its JDBC behavior and SQL dialect for your database, based on the values of your connection-related configuration properties.
http://openjpa.apache.org/builds/1.0.0/apache-openjpa-1.0.0/docs/manual/ref_guide_dbsetup_dbsupport.html
OpenJPA can take advantage of any JDBC 2.x compliant driver, making almost any major database a candidate for use. See our officially supported database list in Appendix 2, Supported Databases for more information. Typically, OpenJPA auto-configures its JDBC behavior and SQL dialect for your database, based on the values of your connection-related configuration properties.
https://people.apache.org/~mprudhom/openjpa/site/openjpa-project/manual/jpa_tutorial.html
Hypersonic SQL, a pure Java relational database, is included in the OpenJPA distribution. We have included this database because it is simple to set up and has a small memory footprint; however, you can use this tutorial with any of the relational databases that we support.
https://www.ibm.com/support/knowledgecenter/en/SSEQTP_9.0.5/com.ibm.websphere.base.doc/ae/tejb_jpatroubleshoot.html
This update manager can rearrange the order of SQL requests to the database. This alleviates an application from knowing the order of entity manager operations required to perform its business logic and optimizes database performance using underlying batching support.
https://github.com/Tirasa/OpenJPA-Azure
Windows Azure SQL Database sharding support for OpenJPA - Tirasa/OpenJPA-Azure
https://www.objectdb.com/database/support
Documentation on this website explains how to use JPA in the context of the ObjectDB Object Database but mostly relevant also for ORM JPA implementations, such as Hibernate (and HQL), EclipseLink, TopLink, OpenJPA and DataNucleus. ObjectDB is not an ORM JPA implementation but an Object Database (ODBMS) for Java with built in JPA 2 support.
http://www-01.ibm.com/support/docview.wss?uid=swg1PM74270
IBM Support. PM74270: OPENJPA=ALL TRACING CAUSES OpenJPA class transform/enhancement to fail. Fixes are available. 8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6 7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29 8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7 ...
https://www.ibm.com/support/docview.wss?uid=swg1PI11628
If the value in the database has been rounded up, it will be different than the un-rounded value stored in-memory. As such, OpenJPA will throw an OptimisticLockException as it will assume the row in the database has been updated. As previously stated, there are two places where a Timestamp version field may be rounded: either by OpenJPA, or the ...
https://issues.apache.org/jira/browse/OPENJPA-464
The current OpenJPA implementation did not provide the SQL statement batching. All SQL statements will be executed one statement at a time to the database. Consequently, the runtime performance was decreased due to lots of database flows.
https://people.apache.org/~mprudhom/openjpa/site/openjpa-project/manual/ref_guide_dbsetup.html
OpenJPA JPA uses a relational database for object persistence. It communicates with the database using the Java DataBase Connectivity (JDBC) APIs. This chapter describes how to configure OpenJPA to work with the JDBC driver for your database, and how to access JDBC functionality at runtime.
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