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

Last updated on JULY 05, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 8.1.7.4 to 11.1.0.6 [Release 8.1.7 to 11.1]
Information in this document applies to any platform.

Symptoms

Parameter DB_FILE_MULTIBLOCK_READ_COUNT is set to  16.

Here is an example:

Cause

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