Re: Debugging deadlocks

Greg Stark wrote:

>Tom Lane <tgl@sss.pgh.pa.us> writes:
>
>
>>Alvaro Herrera <alvherre@dcc.uchile.cl> writes:
>>
>>
>>>On Fri, Apr 01, 2005 at 10:14:07PM -0500, Paul Tillotson wrote:
>>>
>>>
>>>>...
>>>>
>>>>
>>>Well, at that point you need to take a lock in order to be able to
>>>manage locks.  Managing not to step on your own feet in that scenario
>>>is complex, to say the least, if not downright impossible.
>>>
>>>
>>I looked at Paul's first message and thought "nah, that won't work
>>because ... because ... hmm ... hmmm ..."
>>
>>
>
>For what it's worth, this would be very similar to how Oracle handles such
>locks. In that case there's a fixed amount of space per page reserved in
>advance for storing locks.
>
>Actually I think it's a bit more complicated. But that's the idea.
>
>
While we're at it, does anyone know how DB2 and MSSQL server handle
row-level locks?

Paul