Since data redaction involves protecting highly sensitive data, only trusted users should create Oracle Data Redaction policies.

You must have the Execute privilege on the DBMS_REDACT package in order to execute its subprograms.

In addition to the Execute privilege on the DBMS_REDACT package, you must have the ADMINISTER REDACTION POLICY privilege.

GRANT ADMINISTER REDACTION POLICY TO grantee;

Planning an Oracle Data Redaction Policy:

Before creating an Oracle Data Redaction Policy, you must plan a data redaction policy that best suits your needs.

1. First, ensure you have the appropriate privileges to create and manage the Oracle Data Redaction Policy.
2. Identify the data type of the column in the table or view you want to redact.
3. Determine whether the parent object, to which you want to add the Data Redaction Policy, contains dependent objects. If it does, these dependent objects will become invalid when the data redaction policy is added to the parent object. They will automatically be recompiled when used. However, you can proactively recompile them using the ALTER … COMPILE statement.

Note that changing dependent objects to invalid objects and requiring them to be recompiled can lead to performance degradation. Therefore, Oracle recommends adding the data redaction policy to an object with dependent objects during off-peak hours or scheduled downtime.

1. Ensure the column is not used in the Oracle Virtual Private Database (VPD).
2. Specify the type of redaction you want to apply (full, random, partial, regular expressions, nullify, or none).
3. Identify the users for whom the data redaction policy will apply.
4. Based on this information, create the Oracle Data Redaction Policy using the DBMS_REDACT.ADD_POLICY procedure.
5. Configure the policy to include additional columns to redact.

Once the Data Redaction Policy is created, it will be automatically enabled and applied, making it ready to redact data.