A trap is initiated by tasks to report that an event has happened on the system. SNMP traps enable an SNMP agent to notify the NMS of significant events using an unsolicited SNMP message.

Oracle uses SNMPv2c. These notification definitions are used to send standard and enterprise traps.

Traps are sent according to the criteria established in the following:

• IETF RFC 1907 Management Information Base for Version 2 of the Simple Network Management Protocol
• IETF RFC 2233 The Interfaces Group MIB using SMIv2
• Appropriate enterprise MIB (for example the syslog MIB or the System Management MIB).