Hello Andrea,

thanks and let’s continue this at https://bugs.otrs.org/show_bug.cgi?id=13221.

Martin Gruner
Team Lead R&D

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> Am 13.10.2017 um 11:24 schrieb Andrea Iannucci 
> <andrea.iannu...@firstclarity.com>:
> 
> Hi Martin,
> 
> Ticket raised on OTRS Bug site.
> 
> It's actually strange that utf8mb4 is not supported but it's the "workaround" 
> that fixed the first issue
> 
> Regarding your question, how can I check that? I have some modules installed 
> which can somehow be the cause, basically all the modules available on otrs 
> website.
> 
> My understanding is that those modules are now part of OTRS6, so it may be 
> something on that "upgrade" process?
> 
> Thanks
> Best regards
> 
> On 13/10/2017 07:19, Martin Gruner wrote:
>> Hello Andrea,
>> 
>> thanks for the early testing feedback. Can I encourage you to raise issues 
>> at https://bugs.otrs.org/ for your findings please?
>> 
>> Unfortunately, utf8mb4 is not supported atm, because this reduces the 
>> possible length of indexes even more than with utf8. Please see 
>> https://bugs.otrs.org/show_bug.cgi?id=12361.
>> 
>> I’m not sure if this is related to the foreign key issue or not. Are there 
>> any further tables depending on article_type?
>> 
>> Best regards,
>> 
>> Martin Gruner
>> Team Lead R&D
>> 
>> OTRS AG
>> Bahnhofplatz 1a
>> 94315 Straubing
>> 
>> T: +49 (0)6172 681988 0
>> F: +49 (0)9421 56818 18
>> I:  www.otrs.com/
>> 
>> Geschäftssitz: Bad Homburg, Amtsgericht: Bad Homburg, HRB 10751, USt-Nr.: 
>> DE256610065
>> Aufsichtsratsvorsitzender: Burchard Steinbild, Vorstand: André Mindermann 
>> (Vorsitzender), Christopher Kuhn, Sabine Riedel
>> 
>> ____________________________________________________
>> 
>> OTRS Business Solution™ 5s – Organisation.  Sicherheit.  Kommunikation.  
>> Struktur. – Flexible Lösungen für Erfolg im Unternehmen
>> Link: https://www.otrs.com/?lang=de&utm_id=1032
>> 
>> 
>> Mehr Infos:
>> + Lösungen: https://www.otrs.com/produkte/?lang=de&utm_id=1033
>> + Success Stories: 
>> https://www.otrs.com/kunden/success-stories/?lang=de&utm_id=1034
>> + Trainings: https://www.otrs.com/public-otrs-trainings/?lang=de&utm_id=1035
>> 
>>> Am 12.10.2017 um 16:54 schrieb Andrea Iannucci 
>>> <andrea.iannu...@firstclarity.com>:
>>> 
>>> Hi Diego,
>>> 
>>> 
>>> Not really a dev environment but my OTRS istance never went live and I have 
>>> backups :)
>>> 
>>> I managed to pass that bit just now, apparently I had to convert everything 
>>> in the DB from utf8 to utf8mk4 and now I am facing a new stopping error:
>>> 
>>> 
>>>     Step 25 of 33: Post changes on article related tables ...
>>> [Thu Oct 12 16:45:01 2017] DBUpdate-to-6.pl: DBD::mysql::db do failed: 
>>> Cannot delete or update a parent row: a foreign key constraint fails at 
>>> /home/otrs/domains/support.crazynetwork.it/private_html/Kernel/System/DB.pm 
>>> line 470.
>>> ERROR: OTRS-otrs.Console.pl-Maint::Database::Check-00 Perl: 5.16.3 OS: 
>>> linux Time: Thu Oct 12 16:45:01 2017
>>> 
>>>  Message: Cannot delete or update a parent row: a foreign key constraint 
>>> fails, SQL: 'DROP TABLE IF EXISTS article_type'
>>> 
>>>  Traceback (9504):
>>>    Module: scripts::DBUpdateTo6::Base::ExecuteXMLDBString Line: 349
>>>    Module: scripts::DBUpdateTo6::Base::ExecuteXMLDBArray Line: 297
>>>    Module: 
>>> scripts::DBUpdateTo6::PostArticleTableStructureChanges::_DropArticleTypeTable
>>>  Line: 445
>>>    Module: scripts::DBUpdateTo6::PostArticleTableStructureChanges::Run 
>>> Line: 71
>>>    Module: scripts::DBUpdateTo6::_ExecuteComponent Line: 157
>>>    Module: scripts::DBUpdateTo6::Run Line: 69
>>>    Module: ./DBUpdate-to-6.pl Line: 82
>>> 
>>> 
>>> ERROR: OTRS-otrs.Console.pl-Maint::Database::Check-00 Perl: 5.16.3 OS: 
>>> linux Time: Thu Oct 12 16:45:01 2017
>>> 
>>>  Message: Error during execution of 'DROP TABLE IF EXISTS article_type'!
>>> 
>>>  Traceback (9504):
>>>    Module: scripts::DBUpdateTo6::Base::ExecuteXMLDBString Line: 352
>>>    Module: scripts::DBUpdateTo6::Base::ExecuteXMLDBArray Line: 297
>>>    Module: 
>>> scripts::DBUpdateTo6::PostArticleTableStructureChanges::_DropArticleTypeTable
>>>  Line: 445
>>>    Module: scripts::DBUpdateTo6::PostArticleTableStructureChanges::Run 
>>> Line: 71
>>>    Module: scripts::DBUpdateTo6::_ExecuteComponent Line: 157
>>>    Module: scripts::DBUpdateTo6::Run Line: 69
>>>    Module: ./DBUpdate-to-6.pl Line: 82
>>> 
>>> 
>>> I know is not table, but I wanted to look what's new and still an "external 
>>> tester" can always be useful to devs and others, so for the first bit the 
>>> issue was the charset, maybe the update script should manage to change it.
>>> 
>>> Regarding the latest error I am receiving, I have tryed to disable the 
>>> foreign key check but it didn't actually help.
>>> 
>>> 
>>> Any idea? :)
>>> 
>>> 
>>> On 12/10/2017 15:49, Diego Chacón wrote:
>>>> OTRS 6 is not yet a stable version
>>>> 
>>>> I assume (hopefully) that you are testing it in a development environment
>>>> 
>>>> --
>>>> /Diego Chacón Rojas/
>>>> /* E-mail: di...@gridshield.net <mailto:di...@gridshield.net>/
>>>> 
>>>> 
>>>> 
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