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11

Error using query with MAX() function

(Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_24 (on Linux 2.6.32-71.24.1.el6 ... strings in any length that is supported by Java (i.e. up to 2GB). Your test case demonstrates ... ] Unexpected exception (Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_24 (on Linux 2.6
11

em.flush(); em.clear(); loosing data and not persisting managed objects

) Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_24 (on Linux 2.6.32-71.24.1.el6.x86_64 ... as demonstrated by this test should be avoided, if possible, because a primary key whose length ... exception (Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_24 (on Linux 2.6.32-71
10

Eclipse plugin problem (using ObjectDB as a separate bundle)

. support Support Hello, Make certain the Group items by category is selected ... /cdatetime/update-N/ - doesn't contain categories. Uncheck the "Group items by category" - see nebula ... / Select "Group items by category", then deselect "Maven integration (optional)" see the "Groovy attachment
2

cannot delete objects after crash (see issue 2283)

transactions together and reducing the number of sync operations by sync per such group ... consideration (e.g. if synchronized writing by ObjectDB to the disk returns before the physical writing is completed and the data is still buffered by the OS / disk). Therefore, if you will be able
2

queries under 2.7.6_4 significantly slower than under 2.7.6

--------------------- Group the results of step 4 by: o. [Step 6] Remove duplicates from the groups of step 5. [Step 7 ... )')). [Step 1b] Order the results of step 1a by: v$1. [Step 1c] Scan index com.agile.hummingbird ... of step 1c by: v$1. [Step 1e] Merge the results of steps 1b, 1d using OR. Step 2: Process
2

Entity Management Settings

can manage non enhanced classes by using reflection at the cost of performance. The possible values ... ", "soft" and "strong". Modified entities are always held by strong references in the persistence ... of the shared level 2 cache that is managed by the EntityManagerFactory and shared by
2

Database Doctor

of a corrupted ObjectDB database file Repairs a corrupted ObjectDB database file by creating a new ... - if the recovery file is disabled. Using the database file simultaneously by two instances of the ObjectDB ... . Modifying the database file externally not through ObjectDB (e.g. by malicious software such as
2

General Settings and Logging

for data that exceeds a limit size that is specified by the threshold attribute. The mb and kb suffixes ... for ObjectDB to avoid using sockets that are expired by the firewall. The <url-history> element   <url ... database URLs for use by the Explorer. The size attribute specifies the maximum size of this list
2

Online Backup

An ObjectDB database can be backed up by simply copying or archiving the database file while the database is offline (i.e. when it is not open in an ObjectDB server and not in use by any application ... Backup The online backup can be started by executing a special query on an EntityManager (em
0

Step 3: Define a Spring DAO Component

Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right ... = em.createQuery( "SELECT g FROM Guest g ORDER BY g.id", Guest.class); return

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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