Clear ADActivity Tables
When troubleshooting an ADActivity issue, you sometimes need to clear the standard reference tables. Follow these steps.
Step 1 – Create a new job and assign a query using the ADActivity Data Collector.

Step 2 – In the Active Directory Activity DC Wizard on the Category page, select the Remove Tables category task.

Step 3 – Click Next to go to the Results page. Optionally, select the Success checkbox to display a confirmation of successful removal in the results after the job runs.
Step 4 – Click Next and then Click Finish to close the Active Directory Activity DC Wizard. Click OK to close the Query Properties window.
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When you run the job, it removes all ADActivity standard reference tables from the database.