How can I check the permissions that a user has in Oracle?

To view the permissions that an Oracle user has, you can use one of the following methods:

1. Utilize the provided system view:
   After connecting to the Oracle database, you can query the DBA_SYS_PRIVS view which lists all the system privileges owned by each user. For example, you can run the following query to see all the system privileges that user SCOTT possesses:
2. Retrieve all data from the table DBA_SYS_PRIVS where the recipient of privileges is ‘SCOTT’.
3. Similarly, you can query the DBA_TAB_PRIVS view to see the table-level privileges granted to a user.
4. Retrieve all records from the table DBA_TAB_PRIVS for the user SCOTT.
5. Using role queries:
   Oracle users can have permissions indirectly through roles. To view all roles a user has, you can query the DBA_ROLE_PRIVS view. For example, you can run the following query to see all roles that user SCOTT has.
6. Retrieve all records from the DBA_ROLE_PRIVS table where the GRANTEE is ‘SCOTT’.
7. To check the permissions of a role, you can query the DBA_SYS_PRIVS and DBA_TAB_PRIVS views, replacing the role name with the roles owned by the user.

Please note that executing the above query requires sufficient authorization. Typically, only users with the DBA role can query these views. If the current user does not have enough permissions, you can try querying these views using a user with DBA authority.