top 5 event中PX Deq Credit: send blkd这个很高

yobyin

Event Waits Time(s) Avg Wait(ms) % Total Call Time Wait Class
PX Deq Credit: send blkd 4,195,885 1,272,769 303 79.6 Other
direct path read 1,806,687 118,211 65 7.4 User I/O
db file sequential read 15,294,760 78,122 5 4.9 User I/O
CPU time   47,852   3.0   
db file scattered read 2,915,953 41,020 14 2.6 User I/O

renxiao2003

帮你顶一下。