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Question on AWR reports.

edited Mar 27, 2013 9:12AM in Database Tuning (MOSC) 2 commentsAnswered
Hi,
WE have a 2 node RAC installation for EBS R12.1.3  running on 11.2.0.1   (ASM) .    Over the last few days , we have seen a performance degradation in the instance.  Initial analysis shows the following

Top 5 Timed Foreground Events

Event Waits Time(s) Avg wait (ms) % DB time Wait Class db file sequential read 4,010,385 21,403 5 53.32 User I/O direct path read 386,148 6,965 18 17.35 User I/O db file scattered read 256,726 5,102 20 12.71 User I/O DB CPU   3,350   8.35   direct path read temp 67,438 1,186 18 2.95 User I/O

Top 5 Timed Foreground Events

Event Waits Time(s) Avg wait (ms) % DB time Wait Class db file scattered read 192,274 2,200 11 23.53 User I/O DB CPU   1,967   21.03   db file sequential read 200,308 1,147 6 12.26 User I/O direct path read 6,690 124 19 1.33 User I/O log file sync 11,394 93 8 0.99 Commit

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