Is any risk when i try to update a mysql server's charset from utf8 to utf8mb4?

Question

Include changing databases' or tables' or columns charset to utf8mb4. Thanks!

Answer 1

Going the other way (from utf8mb4 to utf8) - According to mysql`s manual the risk is if your fields contain 'supplementary' characters. Otherwise they should be identical. Looks like there should be no risks going the way you intend.