3391
MariaDBERRORNotableAccess ControlHIGH confidence
Cannot revoke a mandatory role from user
Production Risk
Low — REVOKE fails; no change occurs.
How to reproduce
trigger — this will error
trigger — this will error
REVOKE mandatory_role FROM 'user'@'localhost';
expected output
ERROR 3391 (HY000): Cannot revoke mandatory role.
Fix
Remove role from mandatory_roles first
Remove role from mandatory_roles first
SET PERSIST mandatory_roles = ''; REVOKE mandatory_role FROM 'user'@'localhost';
Why this works
Once the role is no longer mandatory, it can be revoked from individual users.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3391 ER_USER_IS_MANDATORY_ROLE
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