duplicate in meterilized lines views

We have a materialized view refresh the jobs that go with dbms_scheduler every morning.
DBMS_MVIEW. REFRESH (LIST = > 'SUBSCRIBER', METHOD = > 'C', atomic_refresh = > FALSE);
Oddly today morning that we noted duplicated in the Mview lines

I ran this mview refresh manually, there is no duplicates now

could you guys face this King of the problem at any time, you may guss what could be the problem for that


Thank you
-AK

tt0008 wrote:
We have a materialized view refresh the jobs that go with dbms_scheduler every morning.
DBMS_MVIEW. REFRESH (LIST-online "SUBSCRIBER", METHOD-online 'C', atomic_refresh => FALSE);
Oddly today morning that we noted duplicated in the Mview lines

I ran this mview refresh manually, there is no duplicates now

could you guys face this King of the problem at any time, you may guss what could be the problem for that

Something in the data source that was there and no longer are?

Very carefully check the underlying SQL of the MV

Also check the SQL used to query the MV for find duplicates

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