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Corrupted Database or error in ObjectDBExplorer?

is probably fine, but apparently the Explorer is missing a recent schema change. Have you changed class ... but somehow the Explorer doesn't have the up to date schema in the database. If this is the case, try to open the database with up to date schema (your entity classes and XML metadata if any) available in


The cause of this exception is unclear but according to the stack trace it is related to failed schema ... , since you probably haven't changed the schema of the type already 3 times. Is it possible ... server supports live schema changes. The purpose was to handle schema changes without server restart

Database Inconsistency or corruption

.persistence.Table(name = "ObjectValues", schema = "dex_01") @javax.persistence.NamedQueries ... = "objectValueGen") @javax.persistence.TableGenerator(name = "objectValueGen", table = "IdValues", schema ... .persistence.JoinTable(name = "ObjectValueAttributes", schema = "dex_01", joinColumns = @javax

Time Sequence Object Command DB

. Object schemas are stored in the database and updated schemas are added in sequence in the database without having to update objects defined using the older schemas. When the database is loaded, it will first load an object schema, then the object, then perhaps a new schema and a new object


are stored as part of the class schema in the database (but only as part of the schema, values ... . It might be confusing and it would be better to filter transient fields from object display. Handling schema changes is explained at: http://www.objectdb.com/java/jpa/entity/schema http://www.objectdb.com/java/jpa

com.objectdb.o.UserException: Failed to generate dynamic type

your classes, if generating these classes from the database schema fails. What is the hierarchy ... the standard JVM -cp / -classpath argument. support Support Reading about Schema Update. I see there is Package/Class/Field elements in the schema - but where do I find the schema section? In which file

ODB should auto-restart if it detects it's necessary

Hi! I find very tricky the need to restart ObjectDB server after schema modifications in ... objectdb.config) that each time ObjectDB detects a schema change that requires restart ... the last days because of these schema changes without restart, which gave us a lot of problems

multiple different applications access one odb file

and the other one would be for exposing the DB data via web services. Do all these apps need to have the same DB schema. The BIRT addon ... classes in one APP would result in DB schema change. Actually, we have tried this and it works as ... class with different database schemas on the same database at the same time. You may, however, try

Unexpected Exception (Error 990) with ArrayIndexOutOfBoundsException

Daniel Jahn Thank you for the report. The stack trace indicates an unexpected exception during schema ... What do you mean by schema evolution? These are the fields of the EventLogPersistEntry class: private ... regards dja Daniel Jahn Adding methods is not considered as a schema change, and anyway schema changes

Entity field renaming does not work

the schema for renaming to the objectdb config: <schema>         <package name="com.btc.ep ... > </package> </schema> We have also class and package renaming for other entities and it works ... time that the database is opened with the schema change specified in the configuration file

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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