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backup all oracle users and their passwords

if you have a process that run over your DB daily, or any other use cases that you need to recover your users after it you should simply run this query below to generate a simple script using DBMS_METADATA functions and run it over the instance when you desired to:

SQL>

set head off
set pages 0
set long 9999999
spool create_users.sql
SELECT DBMS_METADATA.GET_DDL('USER', USERNAME) || '/' DDL FROM DBA_USERS
UNION ALL
SELECT DBMS_METADATA.GET_GRANTED_DDL('ROLE_GRANT', USERNAME) || '/' DDL
FROM  DBA_USERS
UNION ALL
SELECT DBMS_METADATA.GET_GRANTED_DDL('SYSTEM_GRANT', USERNAME) || '/' DDL
FROM DBA_USERS
UNION ALL
SELECT DBMS_METADATA.GET_GRANTED_DDL('OBJECT_GRANT', USERNAME) || '/' DDL
FROM DBA_USERS;

spool off;


enjoy :-)

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