Comparison of OpenJPA with H2 embedded vs ObjectDB server

Each of the following tables focuses on a specific database operation, where the last table presents average results comparison.

Speed comparison of JPA database persistence operations (normalized score, higher is better)

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server
Basic Person Test	17.1	35.2	5.8	74.1	11.5	54.7
Element Collection Test	10.9	38.2	4.9	57.8	7.9	48.0
Inheritance Test	14.3	32.7	5.9	72.8	10.1	52.7
Indexing Test	24.4	49.9	13.7	90.1	19.1	70.0
Graph (Binary Tree) Test	6.8	100	6.7	89.2	6.7	94.6
Multithreading Test	34.2	76.6	10.2	99.4	22.2	88.0
All Tests	17.9	55.4	7.9	80.6	12.9	68.0

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 embedded in persisting JPA entity objects to the database. Comparing the normalized speed of OpenJPA with H2 embedded database (12.9) to the normalized speed of ObjectDB database server (68.0) reveals that in these tests, ObjectDB server is 5.3 times faster than OpenJPA with H2 embedded.

A huge performance gap has been detected when using graphs of objects with small transaction size. Comparing the normalized speed of OpenJPA with H2 embedded database (6.8) to the normalized speed of ObjectDB database server (100) reveals that in that case, ObjectDB server is 14.7 times faster than OpenJPA with H2 embedded.

Speed comparison of JPA database retrieval operations (normalized score, higher is better)

Retrieval Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server
Basic Person Test	14.6	15.7	27.2	45.4	20.9	30.5
Element Collection Test	0.0046	19.9	4.3	49.2	2.1	34.6
Inheritance Test	0.011	13.2	7.4	49.4	3.7	31.3
Indexing Test	17.0	14.0	35.0	59.5	26.0	36.8
Graph (Binary Tree) Test	1.0	19.9	1.4	24.7	1.2	22.3
Multithreading Test	18.7	19.7	27.6	60.2	23.1	40.0
All Tests	8.6	17.1	17.1	48.1	12.8	32.6

The results above show that in general ObjectDB server is more efficient than OpenJPA with H2 embedded in retrieving JPA entity objects from the database. Comparing the normalized speed of OpenJPA with H2 embedded database (12.8) to the normalized speed of ObjectDB database server (32.6) reveals that in these tests, ObjectDB server is 2.5 times faster than OpenJPA with H2 embedded.

A huge performance gap has been detected when using JPA element collections with small retrieval size. Comparing the normalized speed of OpenJPA with H2 embedded database (0.0046) to the normalized speed of ObjectDB database server (19.9) reveals that in that case, ObjectDB server is 4,326 times faster than OpenJPA with H2 embedded.

Speed comparison of JPA database query operations (normalized score, higher is better)

Retrieval Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server
Basic Person Test	5.0	38.8	1.1	25.9	3.1	32.4
Element Collection Test	1.7	39.5	1.3	33.1	1.5	36.3
Inheritance Test	2.2	34.8	1.2	34.0	1.7	34.4
Indexing Test	13.8	14.5	23.2	53.3	18.5	33.9
Multithreading Test	1.4	50.8	0.60	52.1	0.99	51.5
All Tests	4.8	35.7	5.5	39.7	5.1	37.7

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 embedded in executing the tested JPA queries. Comparing the normalized speed of OpenJPA with H2 embedded database (5.1) to the normalized speed of ObjectDB database server (37.7) reveals that in these tests, ObjectDB server is 7.4 times faster than OpenJPA with H2 embedded.

A huge performance gap has been detected when using multithreading with large retrieval size. Comparing the normalized speed of OpenJPA with H2 embedded database (0.60) to the normalized speed of ObjectDB database server (52.1) reveals that in that case, ObjectDB server is 86.8 times faster than OpenJPA with H2 embedded.

Speed comparison of JPA database update operations (normalized score, higher is better)

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server
Basic Person Test	10.0	18.3	6.0	40.9	8.0	29.6
Element Collection Test	0.011	21.1	3.8	53.7	1.9	37.4
Inheritance Test	0.046	19.9	5.0	51.9	2.5	35.9
Indexing Test	8.9	17.9	7.0	52.1	8.0	35.0
Graph (Binary Tree) Test	2.4	42.6	1.3	24.1	1.9	33.3
Multithreading Test	16.6	68.6	4.3	68.7	10.4	68.6
All Tests	6.3	31.4	4.6	48.6	5.4	40.0

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 embedded in updating JPA entity objects in the database. Comparing the normalized speed of OpenJPA with H2 embedded database (5.4) to the normalized speed of ObjectDB database server (40.0) reveals that in these tests, ObjectDB server is 7.4 times faster than OpenJPA with H2 embedded.

A huge performance gap has been detected when using JPA element collections with small transaction size. Comparing the normalized speed of OpenJPA with H2 embedded database (0.011) to the normalized speed of ObjectDB database server (21.1) reveals that in that case, ObjectDB server is 1,918 times faster than OpenJPA with H2 embedded.

Speed comparison of JPA database removal operations (normalized score, higher is better)

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server
Basic Person Test	18.3	20.2	11.1	67.7	14.7	44.0
Element Collection Test	0.012	22.9	2.9	57.6	1.4	40.2
Inheritance Test	0.030	23.1	6.6	61.6	3.3	42.3
Indexing Test	23.2	34.9	9.7	55.9	16.4	45.4
Graph (Binary Tree) Test	1.8	19.3	2.4	27.9	2.1	23.6
Multithreading Test	31.2	38.5	17.3	50.5	24.2	44.5
All Tests	12.4	26.5	8.3	53.5	10.4	40.0

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 embedded in deleting JPA entity objects from the database. Comparing the normalized speed of OpenJPA with H2 embedded database (10.4) to the normalized speed of ObjectDB database server (40.0) reveals that in these tests, ObjectDB server is 3.8 times faster than OpenJPA with H2 embedded.

A huge performance gap has been detected when using JPA element collections with small transaction size. Comparing the normalized speed of OpenJPA with H2 embedded database (0.012) to the normalized speed of ObjectDB database server (22.9) reveals that in that case, ObjectDB server is 1,908 times faster than OpenJPA with H2 embedded.

Comparison of JPA/Database speed - the averages (normalized score, higher is better)

Transaction/Retrieval Size	Few Entities		Many Entities		Average Score
	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server	OpenJPA H2 embedded	ObjectDB server
Basic Person Test	13.0	25.6	10.2	50.8	11.6	38.2
Element Collection Test	2.5	28.3	3.4	50.3	3.0	39.3
Inheritance Test	3.3	24.7	5.2	53.9	4.3	39.3
Indexing Test	17.5	26.2	17.7	62.2	17.6	44.2
Graph (Binary Tree) Test	3.0	45.4	3.0	41.5	3.0	43.5
Multithreading Test	20.4	50.8	12.0	66.2	16.2	58.5
All Tests	10.2	33.1	8.8	54.6	9.5	43.9

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 embedded in performing JPA database operations. Comparing the normalized speed of OpenJPA with H2 embedded database (9.5) to the normalized speed of ObjectDB database server (43.9) reveals that in these tests, ObjectDB server is 4.6 times faster than OpenJPA with H2 embedded.

A huge performance gap has been detected when using graphs of objects with small transaction/retrieval size. Comparing the normalized speed of OpenJPA with H2 embedded database (3.0) to the normalized speed of ObjectDB database server (45.4) reveals that in that case, ObjectDB server is 15.1 times faster than OpenJPA with H2 embedded.

JPA Performance Benchmark (JPAB)