Re: 8.3rc1 Out of memory when performing update

Roberts, Jon wrote:
>> Subject: Re: [PERFORM] 8.3rc1 Out of memory when performing update
>>
>>>> A simple update query, over roughly 17 million rows, populating a
>>>> newly added column in a table, resulted in an out of memory error
>>>> when the process memory usage reached 2GB. Could this be due to a
>>>> poor choice of some configuration parameter, or is there a limit
> on
>>>> how many rows I can update in a single statement?
>>>>
>>>    I believe that it is plataform problem. Because on *nix this
> limit
>>> don't occur. But I don't specialist Windows.
>> On most Windows Servers(except for database edition and a few other
>> variants), 2Gb is the most you can address to a single
>> process without booting the machine with a special parameter called
> \3G
>> which will allow for allocating up to 3Gb per process.  That is the
>> limit unless you get special versions of windows server 2003 as far as
> I
>> know.  If you do a google search on \3G with windows you will find
> what
>> I am refering too.
>
> Windows 32 bit is limited to 2 or 3 GB as you state but 64 bit Windows
> isn't.  32 bit Linux has similar limits too.

Well, PostgreSQL on Windows is a 32-bit binary, so the limit applies to
this case.

//Magnus