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Collecting Diagnostic information for RCA in the Corruption area (Doc ID 435731.1)

Last updated on AUGUST 31, 2023

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 7.3.0 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
Information in this document applies to any platform.


The document was created for collecting diagnostic information. Many customers request Root Cause Analysis when it comes to database corruption issues. This is a very serious matter and almost all situations are down database issues.  Part of the analyst job is to make sure to collect the minimum information before resolving the issue as it will help in making sure we have most of the required information.

This document will assist analysts in collecting information required for diagnosing various types of corruptions.

This note is not for the customer and the premise around the note is that the analyst has some knowledge of corruptions and the tools involved. Please avoid to send the whole note to the customer; instead individual sections may be provided based on the corruption type. For example if there is a block corruption in a TABLE, post the data block corruption section in the issue.


Troubleshooting Steps

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In this Document
Troubleshooting Steps
 Corruptions Covered in this document
 Generic information needed in ALL the cases
 Data Collection for Undo Corruption
 If the database is up:
 If the database is down:
 Data Collection for Index Corruption
 Data Collection for Whole Database Corruption
 Data Collection for ORA-1410 error
 Data Collection for ORA-8103 error
 Data Collection for Segment Corruption
 If the segment is a TABLE:
 If the segment is an INDEX:
 If the segment is a LOB:
 Any other segment:
 Data Collection for Redo Corruption
 Data Collection for Block Corruption
 Dictionary Corruption

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