Re: Postgres 12.1 : UPPER() in WHERE clause restarts server

On 2/8/20 2:24 PM, Marc wrote:
> Adrian,
> 
> Old production server was postgres 9.6 with Mac0S 10.9 so much older 
> than the “new” server. ( Now MacOS 10.14 Postgres 12.1 )
> After sudden restart of the cpu we started having issues, part of the 
> data that is lost TOAST. . . and we also started having issues when 
> TRUNCATING certain tables. The tabel where Nick reported the 
> “UPPER”-issue was not “involved”
> 
> The data we restored today on the “new” server was from before the 
> crash, and in our opinion “healthy”, didn’t run into any issue importing it.
> 
> Never had issues before, RAID system wasn’t giving any warnings neither. 
> We still presume an hardware failure, but haven’t been able to figure 
> out what exactly.
> 
> I’ll provide a log tomorrow in the morning CET.
> 
> Regarding the stack trace we’ll dig in to it to see what we can come up with
> 
> ¿ is downgrading possible ? We need to have a working system by tomorrow 
> evening CET.

I assume you are talking about taking the data dumped from the 'healthy'
9.6 instance and loading it into an 11 instance?

It would be worth a try, but if you think there is version problem why 
not just use a 9.6 instance for the new server?

If you still have issues, then:

1) Has someone created there own versions of lower() and upper() that 
are masking the default ones?

2) The schema for the problem table, in particular the index definitions 
for the problem fields.

3) Any recent changes/additions of extensions?


> 
> Thanks in advance,
> 
> 
> Marc
> 
> 
> 
> On 8 Feb 2020, at 22:18, Adrian Klaver wrote:
> 
>     On 2/8/20 12:28 PM, Marc wrote:
> 
>         Adrian,
> 
>         Everything was a clean install ( MacOS Mojave and Postgres )
> 
>         Export and import were done with the latest version of PGAdmin.
> 
>         Please advise if we can provide you with anything ( logging etc
>         . . . )
> 
> 
>         Is there a possibility to downgrade to version 11 ?
> 
>     At this point hard to tell whether this a version issue or something
>     else. Probably best not to introduce too many more moving parts at
>     this time.
> 
>     Questions:
> 
>     1) The OS and version you mention above is the same as on the
>     production server below?
> 
>     2) What where the exact issues you had on the production server?
>     The actual error messages would be very helpful.
> 
>     3) Getting a stack trace of the UPPER(), LOWER() issue would be
>     nice. For more info on that:
> 
>     Not that familiar with MacOS, so not sure if the Linux/BSD steps
>     would apply or not, still:
> 
>     https://wiki.postgresql.org/wiki/Generating_a_stack_trace_of_a_PostgreSQL_backend
> 
> 
> 
> 
>         We upgraded over the weekend because we experienced a crash on
>         our production server with “toast” issues as result.
> 
>         Thanks in advance,
> 
>         Marc
> 
>     -- 
>     Adrian Klaver
>     adrian.klaver@aklaver.com
> 
> 
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-- 
Adrian Klaver
adrian.klaver@aklaver.com