Deleting market data in DeepCharts

When a DeepCharts chart stays frozen, shows gaps or wrong prices while the feed is connected, that symbol's local history is often damaged. The Delete Data window erases it over the period you choose so the platform downloads clean data again. The feed must be disconnected and every workspace closed. This tutorial covers the built-in method, the manual fallback through the symbol folder, and what comes back afterwards.

Step by step

1. 01

   Make sure it really is one symbol's data

   Targeted deletion answers four specific symptoms: the chart stops updating, gaps or wrong prices appear, the feed is connected but the chart is frozen, or minor corruption is limited to one instrument. If the whole platform is sluggish, or every symbol is affected, the fix lies elsewhere: follow the "Maintaining and repairing the DeepCharts database" tutorial. And if the chart is empty from the moment it opens, check the subscription and how the market is assigned to the feed first.

2. 02

   Disconnect the feed, close workspaces, open Delete Data

   In this order: disconnect the feed from the Feed menu at the top right, close every chart and workspace from the workspace menu right next to it, then open Options > Delete Data. On recent versions the command lives in the Options > Database submenu. Deleting with the feed connected means DeepCharts keeps writing to the very files you are trying to erase.

3. 03

   Pick the symbol with Select Symbols

   The Delete data window opens with no symbol selected. Click Select Symbols at the bottom left and tick only the affected instrument, NQ-CME for instance. If your MNQ and NQ both show the same defect, select both; otherwise leave the history of a working instrument alone.

   

4. 04

   Set Select Start Date and Data Type

   Select Start Date sets the day from which history is erased. For a chart that froze recently, DeepCharts suggests two to three days before today. For corrupted history, the database problems article advises going back before the error started, fifteen days or more. Data Type picks which data gets erased: Tick on the screenshot, and the corruption article recommends clearing both Tick and Minute. The selected symbol shows on the left of the window.

   

5. 05

   Click Delete, then restart cleanly

   Click Delete and wait for it to finish. Then close the platform, wait about thirty seconds and start DeepChart again. Reconnect the feed and reopen the chart: DeepCharts automatically downloads the erased history and the chart should update normally. This method leaves the rest of the database, your account and your subscription untouched, so it is safe to use as often as needed.

6. 06

   Fallback: delete the symbol folder by hand

   If the chart still does not move after Delete Data, or file path errors keep coming back, the symbol's files are probably corrupted through and through. Open Options > Settings > Various and copy the Database Folder path. Quit DeepCharts, open Windows File Explorer and paste that path into the address bar. Each instrument has its own folder there, named symbol then exchange (NQ-CME, GC-COMEX, FDAX-EUREX). Delete only the affected instrument's folder, not the others. Deleting the whole Database folder is a full reset, covered in the "Maintaining and repairing the DeepCharts database" tutorial.

7. 07

   Restart DeepCharts and check what came back

   Always restart DeepCharts after deleting a folder: skipping the restart can cause file path errors. Reopen the chart: DeepCharts recreates the symbol folder and downloads fresh data automatically, with no effect on your account or your feed. Check the erased period candle by candle on a short timeframe: if the gaps are gone, you are done.

Settings, tab by tab