1  update

2  dtss

   Gradually adjusts the clock on the specified server node to a new
   time, beginning at the time specified by the Time argument.

   update [node node-id] dtss time [absolute-time]

   Example:

   update dtss time 1996-12-30-11:24:00.000-05:00I02.000

2  session_control

3  backtranslation_softlink

   Attempts to update a backtranslation softlink entity in the specified
   namespace.  In order words, the node will attempt to ensure that the
   backtranslation softlink information present in its session control 
   database is consistent with the softlink information in the 
   DECdns namespace.  

   update  [node node-id] session control -
            backtranslation softlink softlinkname
 
   Normally, all the node's backtranslation softlinks are periodically
   updated in the DECdns namespace when the session control attribute 
   maintain backward soft links is true.  However, if updates fail, you 
   can use the DNS$CONTROL or DECNET_REGISTER tools to confirm that a 
   DECdns server is accessible and that the node's object and softlinks 
   are properly configured in the namespace.

   Examples:

   update session control backtranslation softlink -
      WINTER:.DNA_BACKTRANSLATION.%X49.%X0018.%XAA00040052A60
      !  Attempts to update the softlink for DECnet address 24.42
      !    in the WINTER namespace.
 
   update session control backtranslation softlink -
      WINTER:.DNA_BACKTRANSLATION.%XA1725E45 
      ! Attempts to update the softlink for IP address 
      !  161.114.94.69 in the WINTER namespace. (OpenVMS only)

3  tower_maintenance

   update  [node node-id] session control -
       tower maintenance DECdns_fullname
 
   This command attempts to update the tower information in the 
   DECdns namespace.  In order words, the node will attempt to 
   ensure that the address information it is currently using is 
   consistent with the address information present in the DECdns 
   namespace.

   Under normal conditions the towers will be automatically updated
   whenever the Session Control Address Update Interval expires or 
   whenever the node experiences an address change.  

   Occasionally, automatic tower maintenance updates may fail.  For
   example, updates may fail if a DECdns server is not accessible. 
   In that case, the DECNET_REGISTER or DNS$CONTROL tools might then
   indicate that the towers present in the DECdns namespace are not
   consistent with the towers currently in use by the node (as seen
   by ncl show addr).  In that case, you may issue this ncl update 
   command to manually correct the inconsistency after the DECdns
   server becomes available again.

   If an OpenVMS node is configured to run DECnet over IP and the 
   DECdns directory service is in use, IP towers will be maintained 
   in addition to NSAP towers.  However, IP tower maintenance is 
   handled differently than NSAP tower maintenance due to the fact 
   that there will be a period in which the IP address will be 
   0.0.0.0.  In that case, none of the node's IP towers will be 
   updated in the DECdns namespace until DECnet over IP has 
   finished initializing and the node has learned all of its IP 
   addresses (i.e., no 0.0.0.0 address remains).

   Example:

   update session control tower maintenance DEC:.LKG.TRUE
       !  Attempts to update DNA$towers attribute of the 
       !  DEC:.LKG.TRUE object in the DEC namespace with
       !  all of node TRUE's current address information.