There is a bug on zabbix , all messages greather than 10K of size can make hung ( and consequently crash) the zabbix trapper, so please take care about how much data are going to send to Zabbix.
My advice is to verify all the queries and analize how many data they return.
All Orabbix/DBforBIX user should take a look here:
https://support.zabbix.com/browse/ZBX-4980
This bug has been fixed on these zabbix’s relases:
So there isn’t yet a release without this issue and the easy way is to verify the output returned from queries and limit it if too big.
Tags: database, dbforbix, linkedin, monitoring, orabbix, oracle