Re: Pg11 -- MultiXactId xxxx has not been created yet -- apparentwraparound

Hi Alvaro,
     sorry for late reply, I've been out of office.

Il 09/10/19 19:51, Alvaro Herrera ha scritto:
> On 2019-Oct-07, Moreno Andreo wrote:
>
>> Unfortunately, it didn't work :(
>>
>> db0=# select * from failing_table where ctid='(3160,31)' for update;
>> ERROR:  MultiXactId 12800 has not been created yet -- apparent wraparound
> Oh well.  It was a long shot anyway ...
It was a long shot, but it was worth trying
>> Since the probability we are into corruption is very high, what if I \copy
>> all the table but the failing row(s) to an external file, drop and recreate
>> the table, and then \copy clean data back inside?
> Yes, that should work.
It did not work... I think there was some big deal with the cluster itself.
To extract these small parts of data I had to SELECT using OFFSET and LIMIT.
Well, the same query (i.e. select * from table offset 35 limit 145) run 
as it is worked well, but from the moment I put it into a COPY 
statement, it was messing again with multixact, even if I tried back the 
only query.
It ended recovering data from backups (2 days old, and that's good news)

Thanks for your time
Moreno.-
>