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Description

The ORA-01749 error occurs in Oracle Database when a user attempts to grant or revoke privileges to themselves. Oracle prohibits granting or revoking privileges to the same user account.

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Error Message

ORA-01749: you may not GRANT/REVOKE privileges to/from yourself

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Known Causes

3 known causes

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Self-Grant Attempt

The user is attempting to grant a system or object privilege to their own account, which is not permitted.

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Self-Revoke Attempt

The user is attempting to revoke a system or object privilege from their own account, which is also not allowed.

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Incorrect Account

The user may be unintentionally connected to the database with the same account they are trying to modify privileges for.

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Solutions

3 solutions available

1. Grant Privileges to Another User easy

Grant the desired privilege to a different user who can then grant it to the original user.

1

Connect to the Oracle database as a user who has the necessary privileges to grant the required privilege (e.g., SYSTEM, SYS, or a user with DBA role).

2

Grant the privilege to an intermediate user. Replace `ANOTHER_USER` with the name of a different user in your database and `PRIVILEGE_NAME` with the actual privilege (e.g., `SELECT ANY TABLE`, `CREATE SESSION`).

GRANT PRIVILEGE_NAME TO ANOTHER_USER;

3

Connect to the Oracle database as `ANOTHER_USER`.

4

Grant the privilege to yourself (the original user). Replace `YOUR_USERNAME` with your actual username.

GRANT PRIVILEGE_NAME TO YOUR_USERNAME;

2. Use a DBA User to Grant Privileges easy

Execute the GRANT/REVOKE statement using a user with DBA privileges.

1

Connect to the Oracle database as a user with DBA privileges (e.g., SYSTEM, SYS, or a user with the DBA role).

2

Execute the desired GRANT or REVOKE statement. This bypasses the self-privilege check as the statement is being executed by a privileged user.

GRANT PRIVILEGE_NAME TO YOUR_USERNAME;
-- or --
REVOKE PRIVILEGE_NAME FROM YOUR_USERNAME;

3. Modify User's Role Membership medium

If the privilege is granted via a role, adjust the role membership for the user.

1

Identify the role that grants the privilege you are trying to grant or revoke to yourself. This might involve querying the data dictionary views like `DBA_SYS_PRIVS` and `DBA_ROLE_PRIVS`.

SELECT * FROM DBA_SYS_PRIVS WHERE GRANTEE = 'YOUR_USERNAME';
SELECT * FROM DBA_ROLE_PRIVS WHERE GRANTEE = 'YOUR_USERNAME';
SELECT * FROM DBA_ROLES WHERE ROLE_ID IN (SELECT ROLE_ID FROM DBA_ROLES WHERE ROLE IN (SELECT GRANTED_ROLE FROM DBA_ROLE_PRIVS WHERE GRANTEE = 'YOUR_USERNAME'));

2

Connect to the Oracle database as a user with DBA privileges.

3

If you are trying to grant a privilege that is part of a role, and you are trying to grant that role to yourself, you likely already have it or need to have it granted by a DBA. If you are trying to REVOKE a privilege that is part of a role from yourself, you should revoke the role itself from your user.

REVOKE ROLE_NAME FROM YOUR_USERNAME;

4

If you are trying to grant a privilege to yourself that is NOT part of a role, and you are encountering this error, you must use one of the other solutions.

Oracle ORA-01749: Self-Privilege Error