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Best Practice: Add comments when setting database underscored parameters (Doc ID 2877548.1)

Last updated on APRIL 17, 2023

Applies to:

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


The underscored parameters often are a temporary workaround that has limited life span, so the continued use of underscored parameters are not recommended.
Oracle strongly recommends using the default setting for all init.ora (or spfile) parameters, including the underscored parameters.

The problem is that underscored parameters likely do not get unset because users are not comfortable unsetting them, out of fear that the database may be adversely impacted.
This fear is compounded by the fact that most DBAs do not remember the reason those underscored parameters were set initially.


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