We strongly recommend the creation of a username specific for the Data Base Administrator, that will be the owner of the package and of the public catalogues. This will simplify the management of the package. No special privileges are required for this user that must have as default login directory the root of [DIRA2] tree. The disk quota of this user depend from the number (and the size) of the catalogue that you want to install in a site.
If the creation of the username is not possible, it is at least necessary the creation of the directory [DIRA2]. The directory protection will be :
S:REW, O:REW, G:REW, W:RE