Which version of MariaDB is your server running on ?
Please let us know exact versions of MariaDB ODBC driver, UnixODBC library and MySQL client library used by your proxy.
@Vladislavs Sokurenko
MariaDB Server Version: MariaDB-server.x86_64 10.2.6-1.el7.centos
@Glebs Ivanovskis
MySQL client: zabbix-proxy-mysql.x86_64 3.0.9-1.el7
MariaDB ODBC Driver: mariadb-connector-odbc-2.0.15-ga-debian-x86_64
UnixODBC library: unixODBC.x86_64 2.3.1-11.el7
Please let me know if there is anything else you all need.
MySQL client: zabbix-proxy-mysql.x86_64 3.0.9-1.el7
No, I meant version of mysqlclient, not Zabbix proxy.
@Glebs Ivanovskis
mysqlclient: libmysqlclient.so.18.0.0
Is that the library you are looking for?
Yes, but I knew it is .so.18 from memory map. I was hoping to get 5.6.x/5.7.y 
It is very likely that we will need to look into MySQL, MariaDB and ODBC sources to understand the reason, that's why I'm asking for exact versions.
Ah so then were you looking for this package?
mariadb-libs-5.5.52-1.el7.x86_64
Yeah, looks like this one. So, MariaDB is used also as Zabbix proxy backend, correct?
Yes that is correct.
Thank you for the report and provided information! I think now we have everything we need to investigate this issue. But I'm not promising that it will happen soon. Issue seems quite complex.
Ya i figured that it would take an upgrade of something, which takes a while, before it would be resolved. I have created a python script with pyodbc as a work around for now to complete this check. If it would be helpful I might be able to provide an OVF of the proxy that has this issue.
Would be interesting to see version of MariaDB Connector/C package if possible.
Sorry, I am quite puzzled,
You say that you use MariaDB-server.x86_64 10.2.6-1.el7.centos
But mariadb-libs-5.5.52-1.el7.x86_64
Shouldn't it be the same version as your server ?
Im not 100% sure on that Vladislavs, the package was installed from their 10.2.6 repo, if you check out the release notes for that version found here(https://mariadb.com/kb/en/mariadb/mariadb-1026-release-notes/), they mention `with backported and reimplemented features from MySQL 5.6 and 5.7` as with all the other 10.X release notes that I checked. My best guess would be that it is current version of that library they are using for this. Running a `yum list mariadb-libs` only comes back with the `5.5.52-1.el7` version that I currently have installed.
vso If I press download in the link provided then I don't see any 5.5.52-1.el7, you could try to install those and see if issue persists please ?
MariaDB-10.2.6-centos7-x86_64-aws-key-managemen..> 16-May-2017 20:34 1226148 MariaDB-10.2.6-centos7-x86_64-client.rpm 16-May-2017 20:34 50259360 MariaDB-10.2.6-centos7-x86_64-common.rpm 16-May-2017 20:34 202204 MariaDB-10.2.6-centos7-x86_64-compat.rpm 16-May-2017 20:34 2975928 MariaDB-10.2.6-centos7-x86_64-connect-engine.rpm 16-May-2017 20:34 2549060 MariaDB-10.2.6-centos7-x86_64-cracklib-password..> 16-May-2017 20:34 16388 MariaDB-10.2.6-centos7-x86_64-devel.rpm 16-May-2017 20:34 6987300 MariaDB-10.2.6-centos7-x86_64-gssapi-server.rpm 16-May-2017 20:34 46904 MariaDB-10.2.6-centos7-x86_64-oqgraph-engine.rpm 16-May-2017 20:34 585840 MariaDB-10.2.6-centos7-x86_64-rocksdb-engine.rpm 16-May-2017 20:34 63196028 MariaDB-10.2.6-centos7-x86_64-server.rpm 16-May-2017 20:34 113526704 MariaDB-10.2.6-centos7-x86_64-shared.rpm 16-May-2017 20:34 396020 MariaDB-10.2.6-centos7-x86_64-test.rpm 16-May-2017 20:34 105610860 MariaDB-10.2.6-centos7-x86_64-tokudb-engine.rpm 16-May-2017 20:34 5554360 galera-25.3.20-1.rhel7.el7.centos.x86_64.rpm 02-May-2017 16:20 8353220 jemalloc-3.6.0-1.el7.x86_64.rpm 14-Feb-2015 01:09 106112 jemalloc-devel-3.6.0-1.el7.x86_64.rpm 14-Feb-2015 01:09 22876
Doing a `repoquery --whatprovides 'mariadb-libs'` it tells me that they are provided by the `MariaDB-10.2.6-centos7-x86_64-shared.rpm` package.