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Problem on JPA Merge Entity.

is a null value. I check with the Explorer, the statement has a null value on the property ... @Transactional annotation on ErgoDaoJpa? Check entityManager.getTransaction().isActive() - in which methods ... and my full application. In both case the bug is still there. Do you check if the new version fixes the problem

IDs of Entities suddenly became UUIDs?

support auto generation of uuid. We double checked now (following your report) and we cannot find ... generated by your application. Please check that you have only one version of every entity class ... as Long and the other with myId as String). Also check your code for generating uuid strings

General Performance Issues Illustrated with a Specific Method

do you have? What is the total space that they consume (check in the Explorer)? support Support I don't ... of miliseconds are clearly displayed. Please check the code above and you will see all the searchable ... (out of the 64GB, you can check it in the Explorer schema tab). You should also run this query with logging

Database size is much larger than expected (x2)

! You can check it by repeating insertion of a pic of multiples. I can not send the 7GB file ... You should check your code, especially the conversion of images to byte[] - maybe unintentionally ...     } } The result database size is about 3GB as expected. support Support Another thing to check in your code

Unable to persist TreeMap

an old Person that I didn't realized existed. I neglected to check first. Hopefully this additional ... . When something doesn't work, try to check the reasons in the debugger, the Explorer, etc. If the reason ... , which is essential in order to process a TreeMap properly. We will check what can be done to fix

Query for objects persisted within the same transaction

duplicates, after reading every line I first check using a query, if an entity with that attribute ... I do commit. The ugly solution is to use some external list or map to check if given entity ... documentation is so true. I think I'll stick with map to check for duplicates, as performance drop is like 20x - just tested. lwalkowski Lukasz Walkowski

queries under 2.7.6_4 significantly slower than under 2.7.6

indicating deep query plan checks and an overall significant performance loss in all queries ... of these logs that show deep query plan checks (and are new in 2.7.6_04)? In addition ... the best query plan. Build 2.7.6_01 increased the number of query plans that are checked

ObjectDB needs "insert ignore"

. However, to check if a specific primary key is in use, you may also use find or getReferemce ... ." That is correct, but apparently in #3 above you are checking a single object in that operation, so find is expected to be a bit faster in that case (and check also getReference, which could be faster

Referential Integrity

transfer to ObjectDB. huyi Ray Hu As indicated above, reference integrity can be checked by ... overhead. If during tests the application doesn't create dangling references (and that can be checked with the Doctor), avoiding reference integrity checks at runtime improves performance at a minimal risk. support Support

com.objectdb.o.InternalException: null

? Could you please check the database file with the Doctor and post the result report? support ... receive the same error in embedded mode. The result of the Doctor check is: %> java -cp bin/objectdb ... class concurrently. Could you please check if you can reproduce the problem with a clean database by

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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