Check these:
Job Monitoring with CCMS rz20 - Toolbox for IT Groups
Rz21 --> Goto --> Background job Monitoring.
Can not create MTE: no more space | SCN
Monitoring your SAP NetWeaver Components | SCN
http://www.sdn.sap.com/irj/sdn/index?rid=/webcontent/uuid/d02e85ca-47cb-2a10-e08f-e1c07c1fc6c1
Good reading and good luck
Leo