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MMON Trace File Growing Bigger (Doc ID 1992338.1)

Last updated on JULY 30, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.4 and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

MMON trace may grow without any control due memory resize operations.

The mmon trace file will be growing beyound limits and resulting into unwanted trace generation in terms of several thousands of MB or even into more than 1 GB.

In one case, a customer even reported a size of more than 3 GB:

-rw-r----- 1 oracle oinstall 3528341200 Mar 4 03:58 ora_mmon_<Process_ID>.trc

 

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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