Monitoring Alert and Delivery Message in EM grid control

select TARGET_NAME||' /'||METRIC_NAME||' /'||KEY_VALUE METRIC_NAME,TIMESTAMP,DELIVERED,substr(b.MESSAGE,1,100) message,ALERT_STATE,substr(b.DELIVERY_MESSAGE,1,50) DELIVERY_MESSAGE
from sysman.mgmt_notification_log a, SYSMAN.MGMT$ALERT_NOTIF_LOG b
where a.SOURCE_OBJ_GUID(+) =b.SOURCE_OBJ_GUID
and to_char(TIMESTAMP,'MMDD') = '0311'
-- and target_name = 'LISTENER_PMGT_FLPEME01'
-- and DELIVERED ='Y'
order by TIMESTAMP
/

This script is made in Oracle 11g R1 and Em grid control 10.2.0.5.