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Unable To Set Db_file_multiblock_read_count Parameter To Zero (Doc ID 1153666.1)

Last updated on JANUARY 30, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud 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
Information in this document applies to any platform.


Configuring db_file_multiblock_read_count=0 does not enable the Self-Tuning Multiblock Read Count feature and incorrectly results in a value of 1.
This conflicts with the documented behaviour of this parameter.


db_file_multiblock_read_count was set to zero dynamically.

SQL> alter system set db_file_multiblock_read_count=0 scope=memory;


SQL> show parameter db_file_multiblock_read_count

db_file_multiblock_read_count is set to 1 for new sessions


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