Oracle : Ошибка ORA-30457

30457, 00000, "'%s.%s' cannot be refreshed because of unmnanaged NOT NULL columns in container"
*Cause: The container object for the summary contains one or more unmanaged columns do not
allow nulls, and which do not specify a default valur for those columns.
*Action: Make sure that default values are specified for all NOT NULL columns that are not
part of the summary definition.

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