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Master Note: Troubleshooting Database Transaction Recovery (Doc ID 1494886.1)

Last updated on JANUARY 14, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.8 to 12.1.0.1 [Release 9.2 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

Purpose

NOTE: In the images and/or the document content below, the user information and environment data used represents fictitious data from the Oracle sample or bulit-in schema(s), Public Documentation delivered with an Oracle database product or other training material.  Any similarity to actual environments, actual persons, living or dead, is purely coincidental and not intended in any manner.

 To discuss the concepts, modes and detection of Database Transaction recovery.

Scope

 

Details

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In this Document
Purpose
Scope
Details
 Concepts
 12c Multitnenant Database:
 Modes of Transaction Recovery
 Parallel Transaction Recovery
 Serial Transaction Recovery
 Detection of Transaction Recovery
 Identify Dead Transactions and their Sizes
 Identify undo segments containing dead transactions
 Identify the Time for transaction recovery to complete
 Query to identify the number of parallel Recovery Slaves
 Identify Objects involved in Transaction Recovery
 Data Dictionary Tables
 Dump the UNDO block
 Disable Transaction Recovery
 Suggestions
 Information to collect for Oracle Support
References

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