About performance

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ObjectDB - Object Database for Java (JPA/JDO)

Boost your application database performance. Database performance is critical as it is the bottleneck in most applications. ObjectDB is extremely fast and much faster than any other JPA solution ... layer. The result is better performance and faster applications, especially when the object data model
Manual
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Index Definition

scan can be performed. ObjectDB also uses indexes for sorting results and for projection: SELECT ... , a full index scan would be performed. Additionally, if field y was the first field defined in
Manual
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FROM clause (JPQL / Criteria API)

could also cause performance problems. For example, let's look at the following query execution and result ... of the referenced Capital objects is performed one at a time, i.e. the number of round trips
Manual
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Setting and Tuning of JPA Queries

); Flushing changes to the database before every query execution affects performance significantly. Therefore, when performance is important, this issue has to be considered. Lock Mode (setLockMode) ObjectDB
Manual
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SELECT clause (JPQL / Criteria API)

. Specifying the required query results more precisely can improve performance and in some cases ... filters duplicate results. Filtering duplicate results might have some effect on performance
Manual
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Database Connection using JPA

functionality for performing operations on a database. Many applications require multiple database connections ... ) must be performed within an active transaction. The EntityTransaction interface represents and manages database
Manual
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Locking in JPA

is being performed on an old version of a database object, for which another update has already been committed ... (relative to a retrieval followed by a separate lock), these methods perform retrieval and locking as
FAQ
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Is ObjectDB better than Object Relational Mapping (ORM)?

As noted above, using ObjectDB instead of a relational database and ORM combination is easier and leads to better performance. ORM tools, however, are very useful where the use of a relational ... of both worlds - use ObjectDB when applicable for faster development and better performance and use
Manual
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Entity Management Settings

can manage non enhanced classes by using reflection at the cost of performance. The possible values ... , and loading their persistent content lazily, when they are accessed, could improve performance
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ObjectDB Object Database Features [2018-01-27]

(requires login). Performance and Speed ObjectDB is extremely fast - much faster than any other JPA ... performance by avoiding reflection and by using smart tracking. Non enhanced classes are also supported (by