1  –  root-file-spec

    The name of the database root file. The root file name is also
    the name of the database. An error results if you specify a
    database that does not have after-image journaling enabled. The
    default file extension is .rdb.

2  –  backup-file-spec

    A file specification for the .aij backup file. The default
    file extension is .aij unless you specify the Format=New_Tape
    qualifier. In this case, the default file extension is .aij_rbf.

3  –  ""

    Double quotes indicate to Oracle RMU that you want the default
    .aij backup file specification to be used. The default .aij
    backup file specification is defined with the SQL ALTER DATABASE
    statement or the RMU Set After_Journal command.