HOW TO REPAIR ORA-01578: ORACLE DATA BLOCK CORRUPTION

How to diagnose and fix ORA-01578 error?

When you get ORA-01578, while running Oracle database on your computer then it is safe to bet that you have disk crash. Generally, the oracle is not designed to run on your system as it is made for industrial strength servers.

Well, Oracle corruption is rare, but when corruption occurs then it is usually due to bad hardware (disks). “ORA-01578” is an Oracle database table error that occurs when there are many block of corrupt tables. At such situation, the database present in the table becomes inaccessible.

This situation can lead to serious data loss, but you can overcome it if you have a updated backup file. Backup file is the prime and vital thing to fix any sort of data loss. Thus experts advise to have a complete backup to save your data and to take you out from dreaded data loss situation. In case if you have lost your data then you easily fix it or restore it from proper backup file.  But what if you don’t have the proper backup file. Don’t worry still you can have your data.

However, Oracle provides various tools to find the Oracle corruption:

As soon as you detect the Oracle corruption, it’s time to fix it by using the BBED utility. This utility can let you edit the corrupt data block. There are many factor that lead to corruption such as:

- Running Oracle on Windows

- Improper shutdown

- Renaming files when Oracle is down

- Bad permissions of BDUMP, CDUMP or UDUMP directories

- Missing data files

- Data corruption

- and other OS-related issues

ORA-01578: ORACLE data block corrupted is mostly due to software errors.

Normally, block corruption is due to hardware error and likely there is a trace file or log entry which made when it happened. By just examining the trace file, you can find the root cause of the corruption.

If it is due to disk failure then you need to perform an RMAN recovery on this database. Or use a third party tool, to get back the data for oracle use Oracle Database Repair Software. This repair tool can let you repair and recover damage .dbf database files of Oracle 9i/10g/11g. It can easily recovers Tables, Index, Schemas, Views, Primary key, foreign keys, Triggers, Constraints, Function and Procedures. 

This useful program fixes any sort of  Oracle database errors and rescues the file that gets corrupted or becomes inaccessible due to virus attacks, unexpected system failure, software malfunctioning or any other reasons. It offers a simple, easy to use and user-friendly interface that doesn’t need any sort of technical skill in order to operate it.