For act_log: rows are increasing and how to reduce the number the count.
You might want to consider a periodic archive/ purge of the tables that you want to reduce. Below is a technical document for Notification Log table which might be helpful for you to get going for other tables.
Also you might find the below docops to understand the concepts.
Let me know if this helped?
Did the information provided by Maheshwar_Kusuma address your concern regarding the MDB ACT_LOG table?
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