I guess you have a newer mysql client library than the server, because utf8mb4 seems to be the default one for latest versions.
You can try to set the character set in the mysql client configuration file on kamailio server, like:
[mysql] default-character-set=utf8
Cheers, Daniel
On 31.07.25 14:40, Igor Potjevlesch via sr-users wrote:
Seems not enough because after expire time, all errors came back. Even if, just after a restart, some entries have been added to the location table. Updates seem to be the problem.
Do you have an idea?
Regards,
Igor.
*De :*Igor Potjevlesch igor.potjevlesch@gmail.com *Envoyé :* jeudi 31 juillet 2025 12:18 *À :* sr-users@lists.kamailio.org *Objet :* RE: Unknown character set utf8mb4
FYI, finally, it has been fixed adding ?charset=utf8 in the string of the connector, like this:
#!define SQLCONNECTOR "mysql://user:password@IP/dbkamailio?charset=utf8"
Regards,
Igor.
*De :*Igor Potjevlesch igor.potjevlesch@gmail.com *Envoyé :* jeudi 31 juillet 2025 10:01 *À :* sr-users@lists.kamailio.org *Objet :* RE: Unknown character set utf8mb4
To complete, taking a network trace, I saw that before queries, I have one trying to "SET NAMES utf8mb4".
I don't know then if this provoke the failure of the following select query.
Regards,
Igor.
*De :*Igor Potjevlesch igor.potjevlesch@gmail.com *Envoyé :* jeudi 31 juillet 2025 09:43 *À :* sr-users@lists.kamailio.org *Objet :* Unknown character set utf8mb4
Hello,
We move to fresh version of Kamailio 6. We have a MySQL backend in an old version.
We have many errors like this:
ERROR: db_mysql [km_dbase.c:127]: db_mysql_submit_query(): driver error on query: Unknown character set: 'utf8mb4' (1115)
ERROR: <core> [lib/srdb1/db_query.c:393]: db_do_update(): error while submitting query
ERROR: dialog [dlg_db_handler.c:1000]: update_dialog_dbinfo_unsafe(): could not update database info
ERROR: db_mysql [km_dbase.c:127]: db_mysql_submit_query(): driver error on query: Unknown character set: 'utf8mb4' (1115)
ERROR: <core> [lib/srdb1/db_query.c:158]: db_do_query_internal(): error while submitting query
ERROR: avpops [avpops_impl.c:328]: ops_dbload_avps(): db_load failed
ERROR: db_mysql [km_dbase.c:127]: db_mysql_submit_query(): driver error on query: Unknown character set: 'utf8mb4' (1115)
ERROR: <core> [lib/srdb1/db_query.c:158]: db_do_query_internal(): error while submitting query
ERROR: avpops [avpops_impl.c:328]: ops_dbload_avps(): db_load failed
It looks like the accounting module is not affected because we have writes in acc table.
Registrar is affected because dump from location to location table is not working.
Is there a way to make it work with older version of MySQL?
Regards,
Igor.
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