Materialized views refresh

I have a materialized view with a trigger executing a package inserting events in another table. The refresh on the materialized view is a fast refresh. The materialized view log parameters are primary key and no parallel.

In the most cases the execution is OK but sometimes some lines inserted after others start the package execution before. My question is how the refresh of the lines is ordonnanced in the view? Are there some parameters to set to assure  lines refreshing in insertion or update date order?

Thank you for your Responses.