Oracle RMU, the Oracle Rdb management utility, lets database
    administrators manage Oracle Rdb databases. Oracle RMU commands
    are executed at the operating system prompt. Oracle RMU command
    syntax follows the rules and conventions of the DIGITAL Command
    Language (DCL).

    See the RMUALTER help also.

    Oracle RMU commands allow you to display the contents of database
    files, control the Oracle Rdb monitor process, verify data
    structures, perform maintenance tasks (such as backup and restore
    operations), and list information about current database users
    and database activity statistics.

    Oracle RMU commands consist of words, generally verbs, that
    have parameters and qualifiers to define the action to be
    performed.