Steps to reproduce:

I have one Proxy with MYSQL and this proxy monitoring many databases through ODBC. I use Oracle ODBC for monitoring. My resources, such as CPU and memory, are good, but always a
database crash and stops your sending of information the pollers increase until they reach 100% and the Zabbix Proxy loses connection with Zabbix Server. And open many triggers about others hosts. 

What can I do in this case? Have you some solutions?