数据库里面log file sync等待事件严重:
Event Waits Time(s) Avg Wait(ms) %Total Call Time Wait Class
log file sync 736,756 47,252 64 57.1 Commit
CPU time 23,442 28.3
buffer busy waits 40,181 4,546 113 5.5 Concurrency
db file parallel write 50,251 4,018 80 4.9 System I/O
log file switch (checkpoint incomplete) 4,489 3,583 798 4.3 Configuration
上面是做了一个小时的awr,数据库版本是10.2.0.1
DB TIME :1,380.39 (mins)
Redo size: 每秒252,221.77
大家觉得是什么问题导致的?
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