Is there a way to re open a connection in db4o after I used connection.close?

No you cannot reopen a closed container The only thing you can do is to check if a container is already closed: container.ext().isClosed() If you want to reconnect you have the open another object container.

No you cannot reopen a closed container. The only thing you can do is to check if a container is already closed: container.ext().isClosed() If you want to reconnect you have the open another object container.

ExecuteReader requires an open and available Connection. The connection's current state is closed? C# ExecuteNonQuery requires an open and available Connection.

The connection's current state is closed? The connection was not closed. The connection's current state is open?

Statement and Resultset close after connection close? Jdbc connection close and preparedstatement close? Do I need to call close connection?

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