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AWR Report Generation Takes Very Long with Most Waits on "control file sequential read" wait event (Doc ID 2929370.1)

Last updated on FEBRUARY 27, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Information in this document applies to any platform.

Symptoms

AWR Report generation is taking very long time (3+ hours) and mostly getting stuck at "control file sequential read" waits.

Most wait is seen for below SQL:

- Gathering dictionary and fixed object stats did not help improve the time taken. 

-  Following the suggestions in below documents did not help:

Doc ID 2817720.1: AWR REPORT WAITS ON 'CONTROL FILE SEQUENTIAL READ' FOR A LONG TIME
Doc ID 2045523.1: Generating AWR Hangs on 'Control File Sequential Read' with "_hash_join_enabled"=FALSE

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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