摘要：
一.Alerts 和 Metrics说明官方链接：Monitoring and Tuning the Databasehttp://docs.oracle.com/cd/E11882_01/server.112/e10897/montune.htm#CACCIHAB Alerts help you monitor your database. Most alerts notify youof when particularmetric thresholds are exceeded.For each alert, you can set critical and warning thresho 阅读全文
