Oracle-native TNS name support has been added to the Oracle plugin in Zabbix agent 2. The TNS key or TNS value can be specified on the level of item key parameters or the plugin configuration (for named session or default parameters).
TNS name support allows connection description in a clustered DB environment with a single Zabbix host. For more information, see the Oracle plugin readme.
The maximum value for the timeout parameter of the zabbix_get and zabbix_js command-line utilities has been increased to 600 seconds.
The maximum supported version for MariaDB is now 12.0.X.
For changes to existing templates and information on new templates, see Template changes.
The Highlight whole row option is now available in the non-compact Monitoring > Problems view and in the Problems dashboard widget.