Restore tag data from automated backup
Users can restore tag data which have been backup by the automated backup system for example on a new server or after a factory reset.
This does require the corresponding tag definition. If the tag definition was purged as well or it is a new server, the tag definition needs to be restored prior.
On how to restore a data model please follow the instructions here:
The automated backup system only takes a backup and purges tag data and not meta data, as the purpose is to enforce a user defined retention period. As meta data might be stale, they are not automatically purged.
User can do this either by using applications such as:
- Microsoft SQL Server Management Studio
- MSSQL CLI
This can also be used for building custom solutions based on applications which allow for an ODBC connection such as:
- Excel
- C#
- .Net
- Python
Execute Stored Procedure PROREC_Misc_TagData_Read_Backup
Variable name | Datatype | Description | Example |
|---|---|---|---|
@Backupfile | NVARCHAR(100) | The complete path and filename of the tag and meta data backup file Mandatory! Can not be NULL or Empty | Windows Example: D:\MSSQL\DATA\LE_PROREC_Tag_Backup_Nov-2-2022-3-24AM_Mar-23-2023-4-42PM_2023-03-23_17-42-56.bak Linux Example: /var/opt/mssql/data/LE_PROREC_Tag_Backup_Nov-2-2022-3-24AM_Mar-23-2023-4-42PM_2023-03-23_17-42-56.bak |
To restore a backup of tag data, call the stored procedure PROREC_Misc_TagData_Read_Backup using the T-SQL EXEC or EXECUTE keyword and provide the Input variables. Below is an example using T-SQL in SQL Server Management Studio:
If an output window does exist, the progress can be observed.
The stored procedure will verify that the provided values are correct and then restore the tag definition.
The result can be read back from the log table PROREC_Misc_Log.
Below is an example using T-SQL in SQL Server Management Studio:
With the result returned
