Bug: Canot save historical data with QuoteManager

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Mark Brown
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Bug: Canot save historical data with QuoteManager

Postby Mark Brown » 03 Dec 2020

for years i like many here have paid for data that never is saved by QuoteManager how can we save historical data easy?

repeatedly every day MC loads the data from the data vendor and the charts take a long time to come up, even 32 bit piece of crap TS loads charts faster than MC. i feel like this delay is because MC reloads the data every time a chart is opened.

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Svetlana MultiCharts
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Re: Bug: Canot save historical data with QuoteManager

Postby Svetlana MultiCharts » 11 Dec 2020

Hi Mark,

This article contains the rules of saving data into MultiCharts database.

Once the historical data is downloaded from the data feed server and plotted on the chart - it is stored in the cache.
Next time you plot a chart the required historical data is loaded from the cache or data base first, then the missing historical data and realtime data are requested from the data provider.
When you close MultiCharts, QuoteManager and Portfolio Trader, the cached data is compressed and saved to the local database.
In MultiCharts 12 we have also added an option to “Flush Cached Data to Database” manually (MultiCharts->File tab, QuoteManager->Edit tab).
When data is loaded from the database it is being decompressed, that is why it might take some time to load it if a lot of data is utilized.
All requests for missing data that are sent to the data feed are logged in the Event Log of QuoteManager. You can see the instrument, resolution, interval that is being requested to fill the gaps.

Since MultiCharts 14 it is possible to download historical data without plotting a chart.


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