DBMS_MVIEW.REFRESH Tries To Enable Row Movement For Matview Log

(Doc ID 2310432.1)

Last updated on OCTOBER 04, 2017

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.
n as part of refresh process this procedure was executing

>> alter table "SOGINS"."MLOG$_DOCUMENT" shrink space CHECK

Now in the same procedure first execute:

>> alter table "SOGINS"."MLOG$_DOCUMENT" shrink space CHECK

and then if row movement for mlog$ is disabled it turnes it on:

>> alter table "SOGINS"."MLOG$_DOCUMENT" enable row movement

and then shrinks mlog$.

Constantly shrinking mlog$ during peak workload hours leads to user sessions waiting for TM locks on mlog$


To turn implicit shrinking of logs by refresh procedure off



Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms