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How do you revoke a grant in Oracle?
Use the ALL PRIVILEGES privilege type to revoke all of the privileges from the user or role for the specified table. You can also revoke one or more table privileges by specifying a privilege-list. Use the DELETE privilege type to revoke permission to delete rows from the specified table.
How one can grant or revoke privileges?
Once you have granted privileges, you may need to revoke some or all of these privileges. To do this, you can run a revoke command. You can revoke any combination of SELECT, INSERT, UPDATE, DELETE, REFERENCES, ALTER, or ALL.
Which is the correct syntax for revoke command?
Syntax: REVOKE EXECUTE ON [ PROCEDURE | FUNCTION ] object FROM user; Revoking EXECUTE privileges on a function in MySQL.: If there is a function called “CalculateSalary” and you want to revoke EXECUTE access to the user named Amit, then the following revoke statement should be executed.
Can You grant and revoke privileges in Oracle?
Description. You can GRANT and REVOKE privileges on various database objects in Oracle. We’ll first look at how to grant and revoke privileges on tables and then how to grant and revoke privileges on functions and procedures in Oracle.
What happens if a grantor does not revoke a privilege?
If even one grantor does not revoke the privilege, then the grantee can still exercise the privilege by virtue of that grant. If you revoke an object privilege from a user, then the database removes the privilege from the user’s privilege domain. Effective immediately, the user cannot exercise the privilege.
Can a user revoke a grant from another user?
The good thing is, that this won’t fail if there aren’t any grants for one of the listed grantee for one of the selected tables. Mind that this should be executed from an administrator account, like system, so the current user has the right to revoke grants for tables of another user.
What happens when you revoke a privilege in a database?
If you revoke a system privilege from PUBLIC, then the database removes the privilege from the privilege domain of each user who has been granted the privilege through PUBLIC. Effective immediately, such users can no longer exercise the privilege.