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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

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

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

@ElementCollection Set<Integer> is emptied sometimes

is that this MAY happen when schema changes, even though nothing is changed in that Object's class. Any ideas ... sometimes during development while schema changes, but not all the times. The interesting part is that most of the times, schema changes didn't happen into that class. It's very strange and I can't

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

Performance problem

this relationship but it breaks the database. We reported this problem as a schema change problem ... seem to cause problems yet. 2. We reported a issue in forum “Object Relations Error after Schema Change ... why we have errors after Schema Change. We will provide a detailed testing sample. Can we assume

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

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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