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1

Empty temporary dat files in the temp folder

have a connection (open EntityManagerFactory). For each user action we create an EntityManager ... as large data sink. And for optimized data access we hold the connection to the EntityManager. In ... -> "     + "All Database connections are closed but temp contains 10 *.dat files");   for (int i = 0; i < 100; i
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1

Entity with java.util.Date column gives ClassCastException in BIRT

: Cannot get the timestamp value column: 3.     org.eclipse.datatools.connectivity.oda.OdaException ... .java:121) Caused by: org.eclipse.datatools.connectivity.oda.OdaException ;     java.lang ... .getTimestamp(ResultSet.java:351) at org.eclipse.datatools.connectivity.oda.consumer.helper
Issue
1

Exception in thread "ODB-StoreHandler-5094" java.lang.NullPointerException

side). The exception is thrown by the ObjectDB server when a database connection is closed during cleanup of the closed connection. We will need the ObjectDB build number to get more information, as the line ... transaction but a failure of the server to cleanup a connection that apparently was opened
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1

explorer NullPointerException

Connections] menu - could you post a stack trace? The stack trace that you posted is caused on an attempt to open the [Tools > Options] dialog box, and it is not related to the [Recent Connections] menu. 1、the stack what I posted  is exactly about [Tools > Options], and [Recent Connections] is normal
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1

Externalising persistence.xml properties in Glassfish?

one is because the app server provides the ability to have a connection pool setup to the database - aka a managed pool. In Glassfish, setting up this pool is like this (domain.xml):   connection-pool ... ="PrepareThreshold" value="5"> connection-pool>
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1

Index causes increased memory usage

, that simply connects to the application that supplies our data and stores it in an .odb file ...  PersistanceManagerFactory instances), not 30 database connections. You can use as many ... down version of our embedded ObjectDB database application, that simply connects to the application
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1

Log is almost empty (log level 'trace')

side. If there is a connection problem, an exception stack trace should be written at least to one of them. Unfortunately ... a special request to do that by a new connection. This is used by the stop command, but could theoretically happen also by any software that connects the server and sends that special code
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1

Mismatch client-server protocol prefix

. It's also not a network problem. It also happens on the node which also runs the DB server. -> Connection ... , but such exceptions have also been reported due to other issues. Since the same connection and sockets are used ... -server communication. It could be because of concurrent use of the same connection and sockets (i.e. same
Forum
1

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

.eclipse.org/mhonarc/lists/eclipselink-users/msg05258.html: Detached Objects get the connection need ... the EntityManagerFactory is open. The connection used in not the transactional one and when you want ... as the Entity is not serialized, and the connections are still available, you should still be able
Issue
1

preUpdate-methods are called when there is no change

updating the Entity even there was no change. RepositoryModelData repository = connection.find(RepositoryModelData.class, 1); repository.getObsTypes().iterator().next(); connection.getTransaction().begin(); connection.getTransaction().commit(); // --> will result in a call of @PreUpdate