https://www.zabbix.com/documentation/6.0/en/manual/config/items/itemtypes/zabbix_agent/zabbix_agent2#oracle

Some may need to monitor only table spaces, created with MANUAL extent, not AUTO.
It would be nice to include the property to the existing LLD key to be able to use it in filters.

We probably need to alter just one SQL query in this source file https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/src/go/plugins/oracle/handler_tablespaces_discovery.go

Some external links about the topic:

http://www.dba-oracle.com/oracle_tips_mamt_segment_management.htm

https://oracle-base.com/articles/9i/automatic-segment-free-space-management