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How force always recreate database on redeployment.

to force ObjectDB to always delete or empty the database file on startup ? webel Dr Darren Kelly ... To obtain a connection to an empty database (discarding existing content if any) the drop parameter

Schema Evolution Question

the client application was EMPTY. SUBSEQUENT restart of ObjectDB and client after attempting to access ... (with the old schema) being read by the client using the new schema was empty. CAPdev CAP Dev Thank

Object DB vs EclipseLink/TopLink: Unloaded relationships in detached entities

relationships were null (not even just empty where appropriate), and on various pages I got NullPointerExceptions where non-null collection results (including non-null empty) were expected. As explained to me by

Out of memory

, heap size is set to 1536MB. Log files are empty. Database uptime was about 3 weeks. It's still version ... .jar:na] ... 1 common frames omitted The same with explorer. Running query returns empty objects

Recovery file does not match db file

, which has been fixed in version 2.4.0. Please check if the recovery file (odb$) is empty ... - you should upgrade your server. support Support recovery files aren't completely empty (though are tiny, around 306

Removing an entity throws exception

are empty. The query: em.createQuery("select c from Customer c").getResultList(); Code for removing ... empty db it works correctly. The objectdb doctor analysis has not found an error. Clearing the old

EM close causes an exception

, empty the root tmp directory before starting). Temporary directories should be distinct and locked ... -purge", "true"); does not help. But I empty the tmp directory. And during the execution I saw

remove & persist in same transaction => Attempt to reuse an existing primary key value

) and then the special Entity (A) is empty, we remove the special Entity (A). If we add additional data for Entity (B ... transaction: first remove additional Data -> The special Entity (with id 1) is empty and we remove

Removing of an entity removes also another entity type

database and we get an empty result. This is a data lost, why this behavior can occurs? btc_es BTC ... the ResolverMappings with type = 'interfaces' are not available anymore, the result is empty

Table view does not work for queries

This shows that table view does not work for queries Trianglehead Json Error The attached database seems to be empty. support Support Here it is. Not sure why that was empty. Trianglehead Json Error Thank you for this report. Build 2.8.3_04 should fix this issue. support Support Thanks! So I need

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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