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DDService Does Not Update Stored Reserved Values for Inhibited SCADA Measurements (Doc ID 2822634.1)

Last updated on JUNE 02, 2024

Applies to:

Oracle Network Management for Utilities - DMS - Version to [Release 2.4 to 2.5]
Oracle Utilities Network Management System - Version to [Release 2.4 to 2.5]
Information in this document applies to any platform.


On : version, NMS Infrastructure

If a SCADA measurement is Inhibited, NMS is not updating the stored reserve_value for updates that come from the SCADA systems.

If you Inhibit a measurement, and the SCADA system sends an update, DDService does not store the new value, so when the Inhibit is removed, the local measurement reverts to the value at the time of the inhibit.

The issue can be reproduced at will with the following steps:

  1. Start with an NMS instance that has SCADA measurements.
  2. If EMService is running - stop it.
  3. Login with a full Java client.
  4. Find a switch with SCADA topology (BR2412 on OPAL - for example).
  5. Make sure BR2412 is currently closed
  6. Open BR2412 (select the "Manual Override" option)
  7. Validate:
       + BR2412 opens
       + BR2412 shows a quality of "IM" in ScadaSummary
  8. Send in an update (from "SCADA" to close the switch - something like:
       BR2412_close.csv (must end in *.csv to process correctly) - content below:


       cp BR2412_close.csv $NMS_SCADA_SCAN_FILE_DIR

       RTAdapter (in file mode) should process BR2412_close.csv file.
  9. Notice that no real-time changes are observed (since the device is both manually overridden and inhibited.
  10. Cancel the manual override (via right-click on ScadaSummary)
  11. Status does not change (still inhibited)
  12. Cancel inhibit (via right click on ScadaSummary)
  13. Verify Inhibit quality is removed AND device changes to "closed" - since
    the last reported value (from "SCADA") was closed.
  14. Repeat above scenario for one other digital (not Topology Status).
  15. Repeat above for analog value
  16. Send in "bogus" NMS internal quality with "valid" NMS external quality



    The quality of 65540 represents the OUT_OF_RANGE ("R") NMS internal quality (4) AND typically the "X" NMS external quality (65536)

    Since the update is being processed by a "SCADA" adapter NMS should process the "X" and ignore the "R".




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