Norgate Data Updater Usage

Update Mode
Updates and external applications
Triggering updates from a batchfile/powershell script
Update Schedule
Editions Report
Unscheduled Updates
Check the Last Edition Received
Pause Updates
Replace a database
Database Cleanup

Update Mode

In default mode, NDU runs "in the background" to deliver updates automatically as soon as new data becomes available. It can also be set to allow manual updates only, or to provide an update at a scheduled time. The setting can be changed at "Settings > Update Mode". Regardless of the setting, updates can be performed at any time by clicking the "Check for Updates" button on the Update page.

Updates and external applications

Supported back-testing applications that are linked to the NDU database via a plugin (like AmiBroker) can be left open whilst an update is underway.

However, a user may elect to disable automatic updates before a trade simulation is run. If an update occurs part-way through a simulation, then some prices used in the simulation will be up-to-date and some won't. If the same simulation is run once all the data is up-to-date, the results may be different.

Triggering updates from a batchfile/powershell script

A utility called "NDU.Trigger" is provided in the "Norgate Data Updater" folder, which can be used to open NDU, start an update and optionally close NDU according to command line parameters.

Example usage within a batch file:
"c:\Program Files\Norgate Data Updater\bin\NDU.Trigger.exe" UPDATE EXPORT CLOSE WAIT

If no command line parameters are supplied, a documentation screen will pop up showing the available parameters, as illustrated below:

Please note: If NDU is being scheduled to do updates via NDU.Trigger, then the Update Mode under "Settings" is best set to "Update Manually" so that update attempts can't clash.

Update Schedule

Updates for market groups like AU Stocks, CA Stocks, US Stocks and Futures are delivered in a series of Editions, starting with the "Initial" edition for a day and ending with the "Final".

Some key edition times are -

US Equities	Market Close Edition	5.00 pm New York time
CA Equities	Market Close Edition	5.10 pm Toronto time
AU Equities	Market Close Edition	4.30 pm Sydney time
Futures	Final Edition	8.40 pm New York time
Forex	Initial Edition	6.00 pm New York time

A detailed Update Schedule is provided in NDU at "Information > Schedule".

The Schedule is subscription-specific and displays dates & times according to the user's local clock. It shows a 24-hour schedule with the starting point being the current time. The Schedule can be filtered by "Database" to isolate particular times. For instance, a US Stocks subscriber can isolate the times for US Equities, US Indices or World Indices.

The times shown in the Schedule are indicative. This is because data from our upstream sources doesn't necessarily arrive in a regular manner. Data for US Stocks for Friday tends to arrive later than for other days.

The schedule for AU Stocks includes times for "progressive snapshots", which are published 20 minutes after the hour starting at 11.20 am Sydney time. These snapshots are "progressive" in the sense of being "cumulative". The 1500 snapshot, for instance, does not show data for the last hour - instead, it shows OHLC for the entire day up until 3.00 p.m. This snapshot data is provided to us by the ASX and is not available for US Stocks.

Editions Report

The Editions Report can be accessed via a hyperlink on the NDU Update page.

If the Final Edition for a trading day has not yet been published, the Report will show information about the last edition published and the next edition due.

If the Final Edition for a trading day has already been published, the Report will only show information about the next edition due, which will be the Initial Edition for the next trading day.

If an edition is running late, the Report will indicate it accordingly.

If an edition is running significantly late (typically due to a problem at the upstream source), the Report will show it as being "Delayed".

Unscheduled Updates

In addition to delivering regular price (and volume) updates for securities, NDU provides information about securities. This information can change at any time and be published at any time.

Similarly, corrections may be published at any time.

Check the Last Edition Received

To identify the Last Edition received for any particular database, click on the Database tab.

Pause Updates

To temporarily pause updates for a particular database, click on the Database tab, tick the database in question and click the Pause/Unpause button.

Replace a database

To replace an existing database, click on the Database tab, select the database and then click "Download". Download serves to replace a database that has been marked as "Corrupt". But it can also be used to download/replace databases marked as "Missing", "Out of Date" or "Halted".

Database Cleanup

To remove old databases that are no longer being updated (and reclaim disk space) click on the Database tab and then click "Cleanup". This will remove all databases where the State is "No Subscription".