Oracle Revoke - oracle tutorial - sql tutorial




What is Oracle REVOKE ?

  • The Oracle REVOKE statement is used to retrieve the given permissions or privileges on tables from the other users.

Syntax:

REVOKE SELECT, UPDATE, INSERT ON table_name FROM user_name;  
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Example:

  • I’m try to revoke the SELECT and UPDATE privileges on wikitechy_dtl(table) from other user (‘Dharma’).
 revoke syntax
  • By using REVOKE Privilege we can able to retrieve the privileges (insert ,update, etc..) on particular column also.

Example:

REVOKE UPDATE (emp_name), INSERT (emp_id, ename)  ON wikitechy_dtl  FROM Arun
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Explanation:

  • The user cannot take back column level privileges. Suppose the user just want to take back insert privilege on emp_name column then the user have to first take back the whole insert privilege and then grant privilege on emp_id and ename column.

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