I have 3 environments running with different versions of Zabbix. All 3 environments do have a couple of Database Monitoring items using ODBC to execute some queries on a Oracle Database.

In version 3.0.4 this is working well and executing a SQL qeury gives me clear results.

In version 3.0.5 and 3.2.1 it isn't working anymore. The zabbix_server.log says "error reason for "server1:db.odbc.select[ABORTED_JOBS,ORACLE_DATABASE]" changed: Received value [?g?*] is not suitable for value type [Numeric (unsigned)] and data type [Decimal]

Why looks the 'received value' scrambled or fuzzy? Because when I start iSQL on the Zabbix Server and execute the same query than iSQL shows me the correct value. But Zabbix is returning this 'garbage'.