• have some webhook with many parameters to send some payload about problem
• while inserting this message to alerts table
• message might be truncated with ORACLE database as in DB schema parameters field has NVARCHAR2(2048) type.
• so when we generate some JSON to send this might broke message structure completely.

Result:
message has failed to send

Expected:
Ideally write this to zabbix server log as this very hard to investigate

at least we should put some note about this limitation for oracle.
Maybe this note should be added to https://www.zabbix.com/documentation/5.0/en/manual/config/notifications/action/operation/message

Zabbix 6.0 this limitation was fixed by changing type of DB field with ZBX-20420.