Oracle of corrupted files

Hello

I have questions about to recreate the users/Oracle database Oracle and data files corrupted.

Let me explain. I use the Oracle 10.2.0.5.0 Server and had problems with a few blocks of corrupted data. With the DBMS_REPAIR package, that I managed to isolate the blocks and continue normal work. But I wonder if I take backup of this database and create the dump file (I'll use Oracle exp traditional tool to achieve), dropping Oracle users, re-create, and then import a previously mentioned file dump will be database files still contain bad sectors? Or is better for me recreate the entire database?

Thanks in advance,

Smee

Hi Smee,


> Only in theory, if I recreate user and import this discharge, those corrupted blocks will remain in dbf and somehow have performance implications?

It depends on if all these blocks are reused and re-formatted by importing the data. Otherwise you still corrupted blocks, but in the area of space where they do not interfere with the operation (except RMAN backups with control of corruption and other audits as dbv).

The 'full-safe' would be to drop the tablespace (including data files), recreate the tablespace even, re - create users and import the dump or use DBMS_REDEFINITION to reorganize (online) all objects in one tablespace to another and rename it later.

Concerning

Stefan

Tags: Database

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