The DEFINE REPOSITORY command creates a physical CDO repository.

    Specify the OpenVMS directory where you want the repository to
    reside.

    You can charge disk resources for your repository to a resource
    identifier by setting this identifier as the owner of the files
    DEFINE REPOSITORY creates. First, issue the DEFINE REPOSITORY
    command, which sets the creator as the file owner. Then,
    issue the CHANGE PROTECTION command. This operation requires
    privileges.

    OpenVMS utilities, including the OpenVMS BACKUP utility, cannot
    directly access repository files unless you invoke them from an
    account with system privileges.

                               RESTRICTION

       Do not store any files in the OpenVMS directory that
       contains the repository, except the files created by Oracle
       CDD/Repository. Otherwise, if you decide to delete the
       repository later, Oracle CDD/Repository deletes all files
       in this directory.

       Do not create a repository in your top level directory
       [000000].

       Once a repository is defined using the ALTERNATE_ROOT
       parameter, the alternate root cannot be changed or moved.

       Changing the alternate root means that your binary files
       are no longer under the repository anchor. When you back up
       the repository, you must synchronize the backup of all the
       repository files.