What is Oracle exempt access policy?

Overview. The Oracle database EXEMPT ACCESS POLICY keyword provides the user the capability to access all the table rows regardless of row-level security lockouts. Unauthorized grantees should not have that keyword assigned to them.

What is fine-grained access control in Oracle?

Fine-grained access control enables you to build applications that enforce security policies at a low level of granularity. These policies are also referred to as VPD policies. You can use it, for example, to restrict customers accessing an Oracle database server to see only their own accounts.

How do I restrict access to a table in Oracle?

  1. About Oracle Database Vault.
  2. Tutorial: Controlling Administrator Access to a User Schema. Step 1: Enable Oracle Database Vault. Step 2: Grant SELECT on the OE.CUSTOMERS Table to User SCOTT. Step 3: Select from the OE.CUSTOMERS Table as Users SYS and SCOTT. Step 4: Create a Realm to Protect the OE.CUSTOMERS Table.

How do I enable VPD?

Setting up a VPD involves the following steps.

  1. Setup Test Environment.
  2. Create an Application Context.
  3. Create Login Trigger.
  4. Create Security Policies.
  5. Apply Security Policies to Tables.
  6. Test VPD.
  7. What Next.

What is Dbms_session Set_context?

At sign-on, a database logon trigger executes, setting the application context for the user by calling dbms_session. set_context. The set_context procedure can be used to set any number of variables about the end user, including the application name, the user’s name, and specific row restriction information.

What is become user in Oracle?

The BECOME USER Report shows all database accounts roles that have the BECOME USER system privilege. This is a very powerful system privilege: it enables the IMPORT_FULL_DATABASE and EXPORT_FULL_DATABASE roles for use with Oracle Data Pump.

What are the two limits in creating profile in Oracle database?

If you assign the app_user profile to a user, the user is subject to the following limits in subsequent sessions:

  • The user can have any number of concurrent sessions.
  • In a single session, the user can consume an unlimited amount of CPU time.
  • A single call made by the user cannot consume more than 30 seconds of CPU time.

What is fine-grained authorization?

Fine-grained Authorization supports policies that enable decisions about access to both the data level and the field level, in addition to functionality whereas coarse-grained solutions only relate to functionality .

How can I see who accessed a table in Oracle?

To determine which users have direct grant access to a table we’ll use the DBA_TAB_PRIVS view: SELECT * FROM DBA_TAB_PRIVS; You can check the official documentation for more information about the columns returned from this query, but the critical columns are: GRANTEE is the name of the user with granted access.

How can data be accessed by users who do not have direct access to the table?

Even if a user does not have direct access to a table, such as inserting, updating, deleting or even selecting from a table, we can still use grants on stored procedures to allow data operations.