Changing Passwords as Encrypted not Clear-Text

Hi List,

When I try to change my db password like below SQL statement from psql or
pgAdmin tool, it outputs to server logs as like this:

*postgres=# alter user mkoc password 'dummy';
ALTER ROLE
postgres=# alter user mkoc with password 'dummy';
ALTER ROLE
*

### Server Logs ###
2011-12-19 14:35:31
EET--postgres--postgres--[local]--psql--idle--00000LOG: statement: alter
user mkoc password 'dummy';
2011-12-19 14:35:41
EET--postgres--postgres--[local]--psql--idle--00000LOG: statement: alter
user mkoc with password 'dummy';

So, an OS user who can access to server log files can read DB users'
clear-text passwords from these logs. In my opinion, this is a big security
gap.

I don't want to see these changing password logs in clear-text. These
logs must be encrypted passwords instead of clear-text like below:

*Server Logs must be;
*2011-12-19 14:35:31
EET--postgres--postgres--[local]--psql--idle--00000LOG: statement: alter
user mkoc password *values 'XFADIT9248fDSKFD';*
**
Is it possible to see changing passwords as encrypted? How should I change
password or what is the correct sql statement to change user password?

Best Regards,
Murat KOC