Configure logging for the MongoDB Java driver

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You need to set a couple of system properties before loading any of the MongoDB Java driver classes:

// Enable MongoDB logging in general
System.setProperty("DEBUG.MONGO", "true");

// Enable DB operation tracing
System.setProperty("DB.TRACE", "true");

After doing that the driver will use the standard Java logging framework to log messages.

Unfortunately, as far as I can tell from the Java driver code, the logging granularity is not all that fine – for example you cannot selectively log operations on a specific collection.

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