My Oracle Support Banner

Full Table Scans on a Table Reading One Block at a Time. (Due To Chained / Migrated Rows) (Doc ID 554366.1)

Last updated on MAY 19, 2022

Applies to:

Oracle Database - Enterprise Edition - Version 8.1.7.4 to 11.1.0.6 [Release 8.1.7 to 11.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

Parameter DB_FILE_MULTIBLOCK_READ_COUNT is set to  16.

Here is an example:

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Cause
Solution
References

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.