Store more days of history

Diagnostic pack purchased. The default amount of days stored work load repository is eight days. This is how it is changed to 365 days:

select snap_interval, retention
from dba_hist_wr_control;

SNAP_INTERVAL                                     
--------------------------------------------------
RETENTION                                         
--------------------------------------------------
+00 01:00:00.000000                               
+08 00:00:00.000000                               
                                                                                

execute dbms_workload_repository.modify_snapshot_settings(interval => 60,retention => 525600);

select snap_interval, retention
from dba_hist_wr_control;

SNAP_INTERVAL                                     
--------------------------------------------------
RETENTION                                         
--------------------------------------------------
+00 01:00:00.000000                               
+365 00:00:00.000000