Convert short month names into number

I have dates like this and I want to convert those short month names into numbers.

Sep 30 2021 19:00:04 +08

My desired output is either one of them.

2021/30/09 19:00:04 or 20213009190004

Answer

One option

SQL> with x ( string ) as ( select 'Sep 30 2021 19:00:04 +08' from dual )
  2  select to_char(to_date(substr(string,0,length(string) - 3),'Mon DD YYYY HH24:MI:SS'),'YYYY/MM/DD HH24:MI:SS') from x ;

TO_CHAR(TO_DATE(SUB
-------------------
2021/09/30 19:00:04

SQL> with x ( string ) as ( select 'Sep 30 2021 19:00:04 +08' from dual )
  2  select to_char(to_date(substr(string,0,length(string) - 3),'Mon DD YYYY HH24:MI:SS'),'YYYYMMDDHH24MISS') from x ;

TO_CHAR(TO_DAT
--------------
20210930190004