Limits the amount of data displayed when
                DB_ENV->lock_stat_print()
                is called with the DB_STAT_ALL flag.
            
                 If the
                 db_printlog
                 or
                 db_dump utility
                 uses a DB_CONFIG file with this
                 setting, it sets the the default for the amount of data
                 displayed for each key/data item.  This value may be
                 overridden using the
                 -D option for both utilities.
             
The value set here must be greater than 0. The default value is 100.
                 The syntax of this parameter in the DB_CONFIG file is a
                 single line with the string
                 set_data_len, one or more whitespace
                 characters, and the directory name.
            
For example:
set_data_len 1048576