SYS update query causing Concurrency Waits
we noticed high of Concurrency Waits coming from below sys session, is this normal? why it is so high? anything should be done?
query:
UPDATE sys.job$
SET failures =0 ,
this_date =NULL ,
flag =:1 ,
last_date =:2 ,
next_date = greatest(:3, sysdate),
total =total+(sysdate-NVL(this_date,sysdate))
WHERE job =:4