How To Unset DB_FILE_MULTIBLOCK_READ_COUNT to Default Value? (Doc ID 473740.1)

Last updated on DECEMBER 06, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 to 11.2.0.4 [Release 9.2 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 23-May-2016***

Goal

DB_FILE_MULTIBLOCK_READ_COUNT is set to 16 in the spfile.

How to unset the parameter as it keeps reverting back to the default value?

The documentation states:  "As of Oracle Database 10g release 2, the default value of this parameter is a value that corresponds to the maximum I/O size that can be performed efficiently. This value is platform-dependent and is 1MB for most platforms. Because the parameter is expressed in blocks, it will be set to a value that is equal to the maximum I/O size that can be performed efficiently divided by the standard block size."

Solution

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