Check Materialize View Refresh Schedule

SELECT job, what mview_name,

TO_CHAR (last_date, 'mm/dd/yyyy hh24:mm:ss') last_execution,

TO_CHAR (next_date, 'mm/dd/yyyy hh24:mm:ss') next_execution, INTERVAL

FROM dba_jobs

WHERE what LIKE 'dbms_refresh.refresh%';