SharePoint 2016 user account permission

Question

I'm doing March 2019 update on SharePoint 2016 servers this weekend. The Service account that we have (for eg spfarm) is sysadmin on the SQL Server. According to the MS doc, the account also needs to have 'db_owner' permission on all SP databases, but it does not have that. Do you think I should add the db_owner permission for spfarm account before doing the update? Thank you – Kalai

Answer 1

That is not necessary. The SYSADMIN role allows the account to perform every action within the SQL instance without granting any other explicit permissions.