For a fast, efficient and secure database management, Oracle is preferred by many organizations over other relational database applications. Oracle is especially used as the back-end for many data warehouse applications and other larger applications with heavy on-line transactions. But, sometimes because of virus infection, file system corruption, operating system crash or similar problems, the Oracle database gets corrupt and all the data in it becomes completely inaccessible. There are various corrective measures to repair the damaged Oracle database, but if they fail, you can still recover your inaccessible data with the help of any advanced Oracle recovery software.