zOs/TX/PER24SEL

select *
    from A540769.tPer24C1
    where part = 3 and key like 'optHi%'
;
update
         A540769.tPer24C1 set key = 'optHi456'
    where part = 3 and key like 'optHi%'
;
select *
    from A540769.tPer24C1
    where part = 3 and key like 'optHi%'
;