The VERIFY command determines whether a repository is
    structurally correct. This command requires read access. If you
    include the /FIX qualifier, you may also need write access. The
    /FIX qualifier requires SYSPRV or BYPASS privilege.

    The /COMPRESS and /REBUILD_DIRECTORY qualifiers correct the
    errors they encounter; all other qualifiers require the /FIX
    qualifier to correct errors. The /ALL qualifier corrects any
    errors it finds if the logical name CDD$VERIFY_ALL_FIX has been
    defined.

    The /COMPRESS qualifier requires the following:

    o  You must have SYSPRV privilege. Otherwise, CDO displays a no
       privilege error.

    o  You must issue the VERIFY command with the /COMPRESS qualifier
       as the first CDO command in a CDO session. Otherwise, CDO
       reports a conflict error with other users.

    o  You must be the only user of the repository when you issue the
       VERIFY/COMPRESS command. Otherwise, CDO reports an Oracle Rdb
       lock conflict error.

    If you are working with remote repositories, issue the VERIFY
    /EXTERNAL_REFERENCES command by itself before you issue the
    VERIFY/EXTERNAL_REFERENCES command with the /FIX qualifier. If
    a remote device is not mounted, the VERIFY/EXTERNAL_REFERENCES
    command returns an error that the /FIX qualifier attempts to
    correct. Until a device is mounted, the command cannot complete.

    Use the VERIFY/LOCATION command if you issued the OpenVMS
    DCL COPY command to copy a repository or change the name of
    your anchor directory. Use the /LOCATION qualifier with the
    /EXTERNAL_REFERENCES qualifier if you have other repositories
    that reference the repository you are verifying.