In this post, you’ll learn more about the Oracle ErrorORA-01931: cannot grant string to a role with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-01931: cannot grant string to a role
Reason for the Error ORA-01931: cannot grant string to a role
UNLIMITED TABLESPACE, REFERENCES, INDEX, SYSDBA, SYSOPER or SYSASM privilege could not be granted to a role.
How to fix the Error ORA-01931: cannot grant string to a role ?
You can fix this error in Oracle by following the below steps
Grant privilege directly to the user.