I was reviewing some features in Oracle and, basically, every single time I review them I find something new. Seems Oracle Databases’ features are near to infinite and we frequently find some that can really add value to our solutions.
So I decided to make a serie of posts with really quick notes about each one of them.
You can see all posts in this serie in my page of posts and some others more.
Ready? Here it goes:
Read Only Tables
In previous Oracle releases, tables could be made to appear read-only to other users by only granting the SELECT object privilege to them, but the tables remained read-write for the owner. Oracle 11g allows tables to be marked as read-only using the ALTER TABLE command. Examples as per below:
ALTER TABLE table_name READ ONLY; ALTER TABLE table_name READ WRITE;
In case of any other DML or DDL operation try to be ran, the following error will be prompted:
ORA-12081: update operation not allowed on table "OWNER"."TABLE_NAME"
This can be a very useful feature for specific situations where we need to guarantee that no changes be performed on table by applications, like a forced revoke on this specific table, even system grants be in place like “update any table”.