Re: Pg_upgrade error could not load library from 7.14/8.4 to 10.10 version

On 19/9/19 4:57 μ.μ., Tom Lane wrote:
> Ekaterina Amez <ekaterina(dot)amez(at)zunibal(dot)com> writes:
>> El 19/9/19 a las 10:07, Achilleas Mantzios escribió:
>>> On 19/9/19 10:49 π.μ., Ekaterina Amez wrote:
>>>> 2019-09-19 08:53:50.345 CEST [2283] postgres(at)template1 ERROR: could not load library "/usr/lib/postgresql/8.4/lib/plpgsql.so": /usr/lib/postgresql/8.4/lib/plpgsql.so: undefined symbol: SPI_push
> This error is clearly due to trying to load the 8.4 version of plpgsql.so
> into the v10 server.

Yup, in the log, right after the "undefined symbol: SPI_push" ERROR there are entries about logical replication, those could not have come from the 8.4 server. Arghhh I didn't watch close enough. Thanx

>
>> With these results, finally I've:
>>     1- modified template1 in PG 8.4 server to include plpgsql language,
>> so it can be inherited in new databases created from this template.
>>     2- Dropped and recreated my database (let's call it newdb).
> This probably fixed it by ensuring that the plpgsql support functions
> were declared with the standard value of probin.
>
>> The conclusion is that I can avoid the use of plpgsql.so library. My
>> question now would be related about the creation of the language in
>> version 8.4: is it better to create it at template level or at database
>> level?
> I would not sweat too much about this, since you don't intend to keep
> using 8.4 (or at least I hope not). Since 9.0, plpgsql is automatically
> installed at initdb time and there's no need for an additional copy.
>
> regards, tom lane
>
>

--
Achilleas Mantzios
IT DEV Lead
IT DEPT
Dynacom Tankers Mgmt