Hi Power BI Community,
My **incremental refresh** setup (2 hours once) in Power BI **was working fine for a month**, but after **re-publishing the report due to data truncation in the database**, I’m facing the following issues:
- **Refresh is taking extremely long** (much slower than before).
- **DBCC column statistics error occurs** during refresh.
- The report worked fine for the past few days **after the data truncation**, but today the issue appeared suddenly.
**Error Message:**
```
Processing error: Database consistency checks (DBCC) failed while checking the column statistics.
Database consistency checks (DBCC) failed while checking the '<oii>Column (8482)</oii>' column.
Database consistency checks (DBCC) failed while checking the '<oii>AGENT SUBHOUR V (12)</oii>' table.
Database consistency checks (DBCC) failed while checking the '6330c0aa-0781-4cce-ba3b-d4551318e4e7' database.
An error occurred while attempting to save the dataset (reference ID '6330c0aa-0781-4cce-ba3b-d4551318e4e7').
```
Setup Details:
- **Datasource:** MS SQL Server (view: `AGENT_SUBHOUR_V`)
- **Power BI Service:** Incremental refresh enabled
- **Cluster URI:** `WABI-WEST-US-D-PRIMARY-redirect.analysis.windows.net`
Recent Changes:
- Data truncation was performed on the SQL database.
- After that, I re-published the Power BI report.
- **Worked fine for a few days**, but today the refresh is **extremely slow and fails**.
Questions:
1. Why is **the first refresh taking extremely long** after re-publishing?
2. How do I **resolve the DBCC column statistics error**?
3. Is there a way to check if **Power BI is reloading the entire dataset instead of just new data**?
4. What are the **best practices for handling incremental refresh after database truncation**?
Would really appreciate any insights or recommendations! Thanks in advance.