Cluster
    Nocluster

    Specifying the Cluster qualifier causes Oracle RMU to attempt
    to close a database on all nodes in a clustered environment
    that currently have the database open. Specifying the Cluster
    qualifier is similar to issuing the RMU Close command on every
    node in the cluster. Specifying the Nocluster qualifier causes
    Oracle RMU to close a database only on the cluster node from
    which you issue the RMU Close command.

    The default is the Cluster qualifier if you specify the Wait
    qualifier. The default is the Nocluster qualifier if you specify
    the Nowait qualifier.

    The following list describes the behavior of the command when
    you use various combinations of the [No]Cluster and [No]Wait
    qualifiers together in the same command line:

    o  Cluster and Wait

       When you specify the Cluster and Wait qualifiers, the RMU
       Close command closes the database on every node in the
       cluster, even if the database is not opened on the node from
       which the command is issued.

       Because you specified the Cluster and Wait qualifiers, the RMU
       Close command closes and recovers the database on every node
       in the cluster before the DCL prompt is returned to you.

    o  Cluster and Nowait

       When you specify the Cluster and Nowait qualifiers, the RMU
       Close command attempts to close the database on every node in
       the cluster. If the database is not opened on the node from
       which the Oracle RMU command is issued, the command cannot
       close the database on any node, and you receive the following
       error message:

       %RDMS-F-CANTCLOSEDB, database could not be closed as requested
       -RDMS-F-DBNOTACTIVE, database is not being used
       %RMU-W-FATALERR, fatal error on DISK1:[USER1]DATABASE.RDB;1

       Because you used the Nowait qualifier, the database might
       not yet be closed on one or more nodes when the DCL prompt is
       returned to you. When you specify the Nowait qualifier, you
       can receive SYS-F-ACCONFLICT errors when you attempt to access
       a database after you have issued the RMU Close command with
       the Cluster and Nowait qualifiers and the DCL prompt has been
       returned, but the monitor has not yet closed the database on
       all nodes in the cluster.

    o  Nocluster and Wait

       This combination provides the ability to have database
       shutdown complete on the local node before Oracle RMU returns
       to the DCL prompt.

    o  Nocluster and Nowait

       When you specify the Nocluster and Nowait qualifiers, Oracle
       RMU closes the database only on the node from which you issue
       the command, regardless of whether or not the database is open
       on other nodes.

       Because you used the Nowait qualifier, the database might not
       yet be closed on the node from which you issued the command
       when the DCL prompt is returned to you. With the Nowait
       qualifier, you can receive SYS-F-ACCONFLICT errors when you
       attempt to access a database after you have issued the RMU
       Close command with the Cluster and Nowait qualifiers and the
       DCL prompt has been returned, but the monitor has not yet
       closed the database on all nodes in the cluster.