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Materialized View Refresh Hangs with Enq: MS - Contention After Upgrading Database TO 19C (Doc ID 2766193.1)

Last updated on APRIL 05, 2021

Applies to:

Oracle Database - Standard Edition - Version 19.10.0.0.0 and later
Information in this document applies to any platform.

Symptoms

On : 19.10.0.0.0 version, RDBMS

ACTUAL BEHAVIOR
---------------
enq: MS - contention 

Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time
----------------------------------------- ------------ ----------- ------ ------
resmgr:cpu quantum 114,956 86,086 749 44.1
enq: MS - contention 18,904 63,059 3336 32.3
buffer busy waits 68,502 30,064 439 15.4
enq: TX - row lock contention 9,394 2,386 254 1.2

Changes

 Upgrade to 19C

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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