Обсуждение: uncommitted xmin 3100586 from before xid cutoff 10339367 needs to be frozen
Hi All,
We recently started seeing an error “ERROR: uncommitted xmin 3100586
from before xid cutoff 10339367 needs to be frozen” on our user tables.
I’m unable to do ‘vacuum’, ‘vacuum freeze’ or ‘vacuum full’ on Postgres 14.4 running on a windows environment.
from before xid cutoff 10339367 needs to be frozen” on our user tables.
I’m unable to do ‘vacuum’, ‘vacuum freeze’ or ‘vacuum full’ on Postgres 14.4 running on a windows environment.
Error:
first come this---- ERROR: uncommitted xmin 3100586 from before xid cutoff 10339367 needs to be frozen
CONTEXT: while scanning block 1403 offset 8 of relation "pg_catalog.pg_attribute"Thanks,
Daulat
Re: uncommitted xmin 3100586 from before xid cutoff 10339367 needs to be frozen
От
Laurenz Albe
Дата:
On Fri, 2024-03-22 at 10:56 +0530, Daulat wrote: > We recently started seeing an error “ERROR: uncommitted xmin 3100586 > from before xid cutoff 10339367 needs to be frozen” on our user tables. > I’m unable to do ‘vacuum’, ‘vacuum freeze’ or ‘vacuum full’ on Postgres 14.4 running on a windows environment. > > Error: > > first come this---- ERROR: uncommitted xmin 3100586 from before xid cutoff 10339367 needs to be frozen > CONTEXT: while scanning block 1403 offset 8 of relation "pg_catalog.pg_attribute" Update to 14.latest; perhaps that data corruption was caused by a bug that is already fixed. Upgrading won't get rid of the error though (I think). The seasy way is to dump the database and restore it to a new database. Yours, Laurenz Albe
We are unable to take the backup of our database. While taking backup we are getting the same error.
psql: error: connection to server at "localhost" (::1), port 5014 failed: FATAL: pg_attribute catalog is missing 1 attribute(s) for relation OID 2662
Thanks.
On Fri, Mar 22, 2024 at 12:35 PM Laurenz Albe <laurenz.albe@cybertec.at> wrote:
On Fri, 2024-03-22 at 10:56 +0530, Daulat wrote:
> We recently started seeing an error “ERROR: uncommitted xmin 3100586
> from before xid cutoff 10339367 needs to be frozen” on our user tables.
> I’m unable to do ‘vacuum’, ‘vacuum freeze’ or ‘vacuum full’ on Postgres 14.4 running on a windows environment.
>
> Error:
>
> first come this---- ERROR: uncommitted xmin 3100586 from before xid cutoff 10339367 needs to be frozen
> CONTEXT: while scanning block 1403 offset 8 of relation "pg_catalog.pg_attribute"
Update to 14.latest; perhaps that data corruption was caused by a bug that
is already fixed.
Upgrading won't get rid of the error though (I think).
The seasy way is to dump the database and restore it to a new database.
Yours,
Laurenz Albe
Re: uncommitted xmin 3100586 from before xid cutoff 10339367 needs to be frozen
От
Laurenz Albe
Дата:
On Fri, 2024-03-22 at 13:41 +0530, Daulat wrote: > We are unable to take the backup of our database. While taking backup we are getting the same error. > > psql: error: connection to server at "localhost" (::1), port 5014 failed: FATAL: pg_attribute catalog is missing 1 attribute(s)for relation OID 2662 Then you got severe data corruption. This is the index "pg_class_oid_index", and corrupted metadata make recovery difficult. If I were you, I would seek professional help. But first, stop working with this database immediately. Stop the server and take a backup of all the files in the data directory. Yours, Laurenz Albe -- Cybertec | https://www.cybertec-postgresql.com
Re: uncommitted xmin 3100586 from before xid cutoff 10339367 needs to be frozen
От
Vijaykumar Jain
Дата:
On Fri, 22 Mar 2024 at 15:39, Laurenz Albe <laurenz.albe@cybertec.at> wrote:
On Fri, 2024-03-22 at 13:41 +0530, Daulat wrote:
> We are unable to take the backup of our database. While taking backup we are getting the same error.
>
> psql: error: connection to server at "localhost" (::1), port 5014 failed: FATAL: pg_attribute catalog is missing 1 attribute(s) for relation OID 2662
Then you got severe data corruption. This is the index "pg_class_oid_index",
and corrupted metadata make recovery difficult.
If I were you, I would seek professional help.
But first, stop working with this database immediately.
Stop the server and take a backup of all the files in the data
directory.
Do we have an option that op has a replica running and the bug has not propagated to the replica , and the op can failover/ take a backup off the replica.
i mean i could simulate a corruption of pg_catalog on my local vm using dd, but ofc that is hardware level corruption that did not propagate to the replica, so i could failover and backup from the replica just fine.
PS : if the bug propagates to the replica or does corruption on the replica too, then idk the solution. if you could login and get the oid of the objects (and have field types ready externally), then you can run a pg_filedump and copy the data.
i tried an example, but i had a lot of info for that.
corruption demo for blogs. (github.com) (if you dont understand this, then ignore)
Vijay
Re: uncommitted xmin 3100586 from before xid cutoff 10339367 needs to be frozen
От
Laurenz Albe
Дата:
On Fri, 2024-03-22 at 16:07 +0530, Vijaykumar Jain wrote: > On Fri, 22 Mar 2024 at 15:39, Laurenz Albe <laurenz.albe@cybertec.at> wrote: > > On Fri, 2024-03-22 at 13:41 +0530, Daulat wrote: > > > We are unable to take the backup of our database. While taking backup we are getting the same error. > > > > > > psql: error: connection to server at "localhost" (::1), port 5014 failed: FATAL: pg_attribute catalog is missing 1attribute(s) for relation OID 2662 > > > > Then you got severe data corruption. This is the index "pg_class_oid_index", > > and corrupted metadata make recovery difficult. > > > > If I were you, I would seek professional help. > > But first, stop working with this database immediately. > > Stop the server and take a backup of all the files in the data > > directory. > > Do we have an option that op has a replica running and the bug has not propagated to the replica No. Feel free to check on the standby, it should have the same problem. Yours, Laurenz Albe