Primary Note: Overview for SCN issues
(Doc ID 1503937.1)
Last updated on AUGUST 23, 2023
Applies to:
Oracle Database Backup Service - Version N/A and laterOracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 10.1.0.5 and later
Oracle Database Cloud Schema Service - Version N/A and later
Information in this document applies to any platform.
Purpose
As the January 2012 CPU (and associated PSU) releases include some SCN related bug fixes, along with other recommended fixes, this document will provide some information about the System Change Number (SCN) and related issues.
Scope
This document is intended for Oracle DBAs.
Details
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In this Document
| Purpose |
| Scope |
| Details |
| What is System Change Number (SCN)? |
| What is SCN Headroom? |
| Checking the SCN Limit |
| What is this "_external_scn_rejection_threshold_hours" parameter? |
| Documents and Patches Related to the SCN Issue |
| References |