Hi all, How can materialized view logs impact on speed of refresh? How can I see materialized view logs? I'd like to understand the nature of materialized view logs. Just for example, select * from dba_mview_logs where master = 'AP_INVOICES_ALL' I've got log named MLOG$_AP_INVOICES_ALL, the master table is AP_INVOICES_ALL. I tried to select * from MLOG$_AP_INVOICES_ALL but it says that table or view does not exist. Does it mean that I don't have enough priviledge? Sorry for this kind of question. It means that I don't know how to ask properly (honestly). I just have task from tech lead: 1) to see materialized view logs 2) to find out how materialized view logs impact on speed of refresh (if any). Please answer something. Thanks ahead.