You can use the -debug option to configure the amount of messages output by dbwriter. A parameter to the -debug option is the debug level. In general, using the default debug level (-info) should be the preferred choice. Using more verbose debug levels greatly increases the amount of data output by dbwriter. You can specify the following debug levels:
-warning: Display only severe errors and warnings
info: Add a number of informational messages. This level is the default, if the -display switch isn't used
-config: Give additional information that is related to dbwriter configuration, e.g. about the processing of rules (derived values or delete rules)
-fine: Output more information. If this level is chosen, all SQL statements executed by dbwriter will be output.
-finer: for debugging
-finest: for debugging
-all: Display information for all levels (only for debugging purposes).