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Message Level

This allows you to enable debug-messages of db4o. Currently four message levels are supported:

EmbeddedConfiguration configuration = Db4oEmbedded.newConfiguration();
configuration.common().messageLevel(4);
CommonConfigurationExamples.java: Change the message-level

By default the output is send to the console. But you can redirect the output to any output stream. See "Changing the Output Stream"