On Mon, 2021-04-26 at 17:45 -0400, Mike Beachy wrote:
> Does anyone have any pointers on what a virtualtransaction of '-1/0' means?
>
> I'm using SSI and an example is
>
> locktype | database | relation | page | tuple | virtualxid | transactionid | classid | objid | objsubid |
virtualtransaction| pid | mode | granted | fastpath
>
----------+----------+----------+---------+-------+------------+---------------+---------+-------+----------+--------------------+-----+------------+---------+----------
> page | 16384 | 468238 | 19216 | | | | | | | -1/0
| | SIReadLock | t | f
>
> This is incredibly hard to search for.
>
> I see these for page, tuple and (perhaps a clue?) one relation, and I'm seeing the page and tuple locks accumulate
overtime.
> Eventually this results in an "out of shared memory" error.
Not sure, but do you see prepared transactions in "pg_prepared_xacts"?
Yours,
Laurenz Albe
--
Cybertec | https://www.cybertec-postgresql.com
