Database Tuning (MOSC)

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query tunning

edited Dec 22, 2010 1:41AM in Database Tuning (MOSC) 8 commentsAnswered
 Hi,

we have an issue saying one of job is running within 5 mins from 6 to 7 days and 8th or 9th day it is taking so much of time....we enable the trace and checked the trace with traceanalyzer......block access is more and the BG Consistent Read Mode is more on that day.....On other days it is very less.....

I guess on 8th or 9th day query is undergoing disk read and first 2nd to 6 days data is available in the memory so it is running very fast...could you please suggest how can i test and how can i proceed with any explain plan or adding any index...please help me in this....

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