Alarms and KPIs Guide Alarms and Events vSTP Alarms and Events (70000-70060, 70100-70999) 70456 - Serivce DOS Timer Timeout 3.19.205 70456 - Serivce DOS Timer Timeout Event Group vSTP Description DOS Timer waits for Delivery Report SM message and on timeout raises this event Severity Major Instance None HA Score Normal OID Vstp smsProxyDosInvkTimeout Recovery It is recommended to contact My Oracle Support for assistance, if needed.