Skip to content

Create a Duplicated History Database

  1. On the "Databases" -> "History Database" page, click the "Add" button. alt text
  2. In the following pop-up window, select the Duplicated History Database and click "Next" button. alt text
  3. Fill in the configuration and click "OK" button to save. alt text

Configuration ** Description**

Configuration Item Description
Name Name of the history database.
Description Description Information of the history database.
Database Connection 1 The database connection used for this configuration, derived from the history database configured on the History databse list page.
Database Connection 2 The database connection used for this configuration, derived from the history database configured on the History databse list page.
Enable Hierarchical Query Whether or not to hierarchize historical data queries.
Off: All historical data query database connection 1, when database connection 1 fails query database connection 2
On: All historical data query according to the query configuration, respectively query database connection 1 and database connection 2, when database connection 1 fails query database connection 2
Master Database Query Range Historical data queries with query time within this configuration range will query database connection 1.