Specifies the name of the target database root file. For example,
    if you want to preconfigure the master database attributes,
    specify the master database root file. Similarly, you can specify
    the standby database root file to preconfigure the standby
    database.

                                   NOTE

       Do not include a node name when you specify the database-
       rootfile parameter. This parameter must specify a locally
       accessible database root file; the parameter cannot include
       a remote file specification.