Oracle Calculation of Log_Buffer Size (Doc ID 604351.1)

Last updated on JUNE 14, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.2 and later
Information in this document applies to any platform.

Goal

How does Oracle calculate the LOG_BUFFER size?

A big difference can be seen between 10.2.0.3 and 10.2.0.4 when using the same system configuration (in terms of the application and its db objects and datafiles, ram size, number of CPUs etc). In 10.2.0.3 it was set by Oracle to 14M and now in 10.2.0.4 to 15M.

Solution

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