dbverify ::= 
 
  dbv [ USERID=username/password ]
    FILE = filename
  | { START = block_address | END = block_address }
  | BLOCKSIZE = integer
  | HIGH_SCN = integer
  | LOGFILE = filename
  | FEEDBACK = integer
  | HELP  = { Y | N } 
  | PARFILE = filename
  
End of description.