Following script would have to be executed in the FLEXCUBE schema if there are any rows:

declare
cursor cur_tables is
select distinct table_name
from
(
select table_name from user_tab_columns where histogram!='NONE'
);
begin
for rec_tables in cur_tables
loop
dbms_stats.gather_table_stats(ownname=>USER,tabname=>rec_tables.t
able_name,METHOD_OPT=>'FOR ALL COLUMNS SIZE 
1',CASCADE=>TRUE,DEGREE=>2,ESTIMATE_PERCENT=>NULL);
end loop;
end;