Enables/disables specific additional informational and debugging messages in the Berkeley DB message output.
The syntax of the entry in 
            the DB_CONFIG File is a single line 
            with the string set_verbose, one or more whitespace characters, the method flag parameter as a
			string, optionally one or more whitespace characters and the string on or off. If the
			optional string is omitted, the default is on.
			
For example:
set_verbose DB_VERB_RECOVERY
or
set_verbose DB_VERB_RECOVERY on
Enables display of additional information when performing recovery.
The method flag parameters are as follows:
For more information, see DbEnv::set_verbose().