Re: SIREAD lock versus ACCESS EXCLUSIVE lock

Tom Lane  wrote:
> "Kevin Grittner"  writes:
>> What am I missing?
> 
> Out-of-memory.  Query cancel.  The attempted catalog access
> failing because it results in a detected deadlock.  I could
> probably think of several more if I spent ten minutes on it; and
> that's not even considering genuine problem conditions such as a
> corrupted catalog index, which robustness demands that we not fall
> over completely for.
> 
> You should never, ever assume that an operation as complicated as
> a catalog lookup can't fail.
Got it.  Thanks.
-Kevin