The TRANSLATE function replaces a single character with another character.
Translate syntax
TRANSLATE( string, string_to_replace, replacement_string )
Translate example
select translate('7test721', '721', '834') from dual;
Result: 8test834
select translate('111sql4156', '1', '3') from dual;
Result: 333sql4356
select translate('oradev', 'dev', 'cle') from dual;
Result: oracle
select translate('database 1', '1', '2') from dual;
Result: database 2