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16

Queries are slow on a large database

to get MAX/MIN values: SELECT MAX(m.id) FROM MessageImpl m or in JDOQL (with a single query string ... (MessageImpl.class); query.setResult ("min(this.Id), max(this.Id), count(this.Id)"); Object
11

Soft Reference Object Cache Recommendation

option. I use the "generation one" garbage collection option and explicitly set the min and max heap
11

Memory Leak in EntityManagerFactory ?

()' but that doesn't change the issue (of course there are less entities because I testet only for 15 min). Arne
11

objectdb got hang after fetch some record.

-40 min. Manoj Manoj Kumar Maharana please find the attachment of thread dump for your reference
11

Server connection management

? It would be useful to have configuration settings to control the connection pool (min/max connections
11

IN expression in a Criteria Query

value combination). Aggregate calculations (count, sum, avg, max, min) that are carried
11

ObjectDB is opening too many sockets

the heap dumps: idle2_4_min - Server was started for 4 minutes and idle. I saw 40 instances
4

"is not null" queries not working with index

Woraround doesn't work in combination with 'min': System.out.println("min not null: " + em.createQuery("SELECT min(p.bar) FROM Foo p WHERE p.bar >= 0 or p.bar <= 0").getSingleResult()); gives
3

javax.servlet.ServletException: Annotated methods must follow the JavaBeans naming convention. __odbHidden_getPropertyName

widthPxSideBarLeft = 250; @Min(150) @Max(400) public int getWidthPxSideBarLeft() { return widthPxSideBarLeft ... = widthPxSideBarLeft; } It appears in part of a JSF template with dynamic CSS style parameters: style="min-width
2

Server out of memory exceptions

for about 15mins I get out of memory exceptions The test fails faster (in about 2 mins) if I enable another 5

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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