On Feb 14, 2011, at 4:42 AM, Basil Bourque wrote:

> To be clear about the 2 passwords involved with Postgres on your Mac:
> 
> • The installer asks for your usual Mac admin account password, to get 
> permission for 2 operations: (1) to install stuff on your computer and (2) to 
> create a special Unix user account named (by default) 'postgres'.
> 
> The actual disk files that make up your databases, the files containing your 
> data, are stored in a folder owned by that 'postgres' user rather than your 
> normal Mac user account. The reason is security: If your usual user account 
> is compromised, at least your data files remain behind the wall of that other 
> user.
> 
> • The installer prompts you to create a password for that 'postgres' user. 
Just to be clear here, the password is not for the OS user 'postgres' but 
database superuser 'postgres'.
> 
> Make it a good password (long, use digits etc. to avoid being simply 
> dictionary words).
> 
> When you run the 'pgAdmin' app, it will prompt you for that 'postgres' 
> password to connect to the database server as that 'postgres' user.
> 
> --Basil Bourque
> 
> On Feb 13, 2011, at 10:46, Sachin Srivastava wrote:
> 
>> The postgres account created on your OS is locked account (without any 
>> password) for security reasons. The password asked during installation is 
>> your database superuser password (used to connect to database).
>> Thus on your MAC you can login to postgres account as "sudo su postgres".
>> 
>> 
>> On Feb 13, 2011, at 11:27 PM, Maximilian Tyrtania wrote:
>> 
>>> Just upgraded my 8.4.2 installation to 9.0.3 on Mac OS 10.6 using the 
>>> Enterprise one-click installer. Everything went smoothly, except:
>>> 
>>> The installer asked me for the postgres password, but PG wouldn't accept it 
>>> later on. I'm pretty sure i didn't mistype it. Have seen this a number of 
>>> times on different machines. Had to change the password via the passwd 
>>> utility. Anyone else seen this? 
> 
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--
Regards,
Sachin Srivastava
EnterpriseDB, the Enterprise PostgreSQL company.

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