AWR Snapshots are not Generated. Trace file shows: "KEBM: MMON action policy violation. 'Block Cleanout Optim, Undo Segment Scan' viol=1; err=12751" (Doc ID 1932462.1)

Last updated on JULY 05, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.2 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database 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.

Symptoms

AWR snapshots are not generated as per interval specified
During AWR flush, you may see ORA-12751 "cpu time or run time policy violation" : Indicating that MMON worker actions have been suspended.

Cause

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In this Document

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AWR Snapshots are not Generated. Trace file shows: "KEBM: MMON action policy violation. 'Block Cleanout Optim, Undo Segment Scan' viol=1; err=12751" (Doc ID 1932462.1)

Applies to:

Symptoms

Cause

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