About dynamic backup

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Database is locked when in use

active use is unsafe. With ObjectDB 2.x you should use online backup for this purpose. Thanks for the reply. I went through the online backup web page, it is mentioned for EntityManager. How do i ...     query.setParameter("target", new java.io.File("c:\\backup")); And i want all the odb files
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High availability and other pratical questions

of creating a 2 TomEE+ frontend servers cluster with ObjectDB server as a backend DB?  Does DB backup backs all objects including indexes? If yes, is there a way to backup data only? And. is there a way to backup specific entities only? What is the overhead of online backup? What is the overhead
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Some technical questions

back? Since ObjectDB implements online backups, does it implement something like MVCC, so it can see the data at the time the backup was started (to have consistent backup data)?  Thanks Andrej   > E.g. in ... implements online backups, does it implement something like MVCC, so it can see the data at the time
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ClassCastException on closing PersistenceManager

has no errors) with an older backup and the code was running without errors. However it worries me how did ... cannot damage the database, so restarting your application with the same database (instead of a backup ... )   I had to return again to a working backup of the DB. It is quite alarming. I just read ur answer
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Need disk usage and delete some old files

, port, username, password, path, false);       what about backup ? can we make backup by only copying objectdb file? if we make backup by objectdb file , will it make problem for future release of objectdb?   You can read about backup on this manual page. If you have questions about backup
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Class loading problem with private packages in OSGi environment

.PersistenceException Failed to generate dynamic type com.btc.ep.architecture.ccode.bl.impl ... Source) Caused by: com.objectdb.o.UserException: Failed to generate dynamic type com.btc.ep ... to generate dynamic type com.btc.ep.architecture.ccode.bl.impl.CodeArchitectureImpl (error 361) at com
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Query fails with failed to read

. At least issue 1682 is related to online backup and was fixed in version 2.6.3. Are you using online backup when the exception is thrown? Any other special activity at that time? Please post a full stack ... ).   we have it now 5-10 times per day. There is not any backup activity active during these times
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InternalException caused by OOM: Metaspace

.objectdb.o.InternalException: com.objectdb.o.UserException: Failed to generate dynamic type objectdb.java.util.ArrayList com.objectdb.o.UserException: Failed to generate dynamic type objectdb.java ... in Java 8 Metaspace (not the JVM heap) when ObjectDB is trying to generate a dynamic wrapper class
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Multi-tenant setup

request to appropriate database, how to dynamically add new database or schema. There are lot ... and JPA is static. ObjectDB supports a dynamic schema, if your application generates entity classes dynamically (e.g. using CGLIB, javassist, asm, bcel). However, you will lose one of the main benefits
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ObjectDB within a resource adapter module and Java EE Connector Architecture

ragarding possible solutions: http://stackoverflow.com/questions/8784302/dynamic-persistencecontext ... -dynamic-persistence-unit-name http://stackoverflow.com/questions/33790875/how-to-dynamically-modifying