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69

Is ObjectDB the only object database that supports JPA?

Other Object database doesn't support JPA? Manikandan ManikandanPalaniappan JPA is designed as ... databases. For example, user defined primary keys and composite primary keys are features of RDBMS (relational databases), which are not supported by most object databases. ObjectDB does support
69

Performance with large databases

When populating a large database (10s of GBs) performance drops suddenly at a certain time whenever I run the populating application. Is there typically a database size when indexes can no longer ... the ratio between the database size and the available RAM. As long as the available RAM is larger
69

Convert embedded database to server

Hello, What is the right way to convert an embedded database to a server one ? As a result ... to the server data directory, start the server, and access the database from your application using ... and cons between an embedded database ( with remote connection enabled ) and a real server instance
68

Database corrupted after schema change

that the values of the fields are shifted, so in one database TC.tableID contains the value of BDO.modifiedBy, in other database TC.tableID contains the value of BDOWA.attributes converted to String ... the database file... .................................................. 100MB
68

can't get HashMap out of the database

I'm trying to persist an Entity containing a HashMap. It stores the data in the database OK, but the map is always empty when I get the entity out of the database again. I've reproduced this problem ... " nested object in the same test case is not returned, even though it gets stored in the database
68

Password Protect Database File

the data without some kind of password? I would imagine accessing the database from java could just ... for a password for encrypted odb files. ThreaT Ashton Hogan The way to keep an ObjectDB database ... of complete drives, directories or files, and an ObjectDB database is an ordinary file. If you are going
68

Database crash

after reading the database file File: ------------------------------------------------------------------------------------------------------------------------ [2017-07-10 11:22:12 #1 store] Database 'F ... on port 3333 has started by 10380@wzbhb101 [2017-07-10 23:06:55 #3 store] Database 'F:\Hummingbird
68

explorer locks local database in readonly mode

down the whole process. i opened the database in readonly mode, but the file will be locked by the explorer ... improvements. Viewing database files while they are in use is already supported in client-server mode (consider using client-server mode for this purpose, but you will have to reopen the database
13

InternalException in Database Doctor

Database Doctor has thrown an InternalException right after starting to diagnose or repair my DB file. The version of the Doctor used was 2.6.9_06. The stacktrace below: Scanning the database file ... ). Please report this error on http://www.objectdb.com/database/issue/new com.objectdb.o.InternalException: null
13

500Mb ObjectDb database opening issue

Hi, I have observed that 500 Mb objectDb database opening time is very slow (~3 seconds ... any way to speed-up open time for big databases? Definitely, it's too long for 500 Mb database ... with ObjectDb databases which may have size more than 5Gb and opening database time

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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