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Database Doctor

database file Checks a given ObjectDB database file, verifies that it is healthy and valid, and if the file is not valid (it is corrupted), produces detailed diagnosis report of all the errors. Repair of a corrupted ObjectDB database file Repairs a corrupted ObjectDB database file by creating a new

JPA Persistence Unit

a persistence.xml file, which has to be located in the META-INF directory in the classpath. One persistence.xml file can include definitions for one or more persistence units. The portable way ... a persistence unit. The following persistence.xml file defines one persistence unit:

Server User List

configuration file contains the following element: files="20" disk-space="5mb" /> files="20" disk-space="5mb" />

Server Configuration

is affected also by other elements in the configuration file, particularly the and the configuration elements. The default configuration file contains the following element:

Is ObjectDB scalable? What are its limitation?

supports: Database file size up to 128 TB (= 131,072 GB = 134,217,728 MB). Up to 2,147,483,648 entity classes per database file. Up to 2,147,483,648 indexes per database file. Up to 9,223,372,036,854,775,808 entity objects per database file. Unlimited database connections (limited by operating system resources).

Database Management Settings

which are relevant on the server side and in embedded mode. The default configuration file contains the following ... initial="256kb" resize="256kb" page="2kb" /> The element specifies the database file and page size settings: The initial attribute specifies an initial size of every new database file

Database Transaction Replayer

ObjectDB can record its internal engine operations in special binary recording (journal) files ... & Recording Files When recording is enabled, ObjectDB maintains for every database file a recording directory whose name is the name of the database file with the odr (ObjectDB Recording) suffix. By

Database Explorer

. Running the Explorer The ObjectDB Explorer is contained in the explorer.jar executable jar file, which is located in the bin directory of ObjectDB. It depends on the objectdb.jar file. You can run ... the shell file, setting the paths to the objectdb.jar file and to the JVM). Connecting

General Settings and Logging

to both the server side and the client side. The default configuration file contains the following element ... " threshold="64mb" /> To meet memory constraints ObjectDB can use temporary files in processing of large ... file settings: The path attribute specifies a directory in which the temporary files are generated

SSL Configuration

file contains the following element: