SQL Performance (MOSC)

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sql difference

edited Dec 31, 2013 4:12AM in SQL Performance (MOSC) 3 commentsAnswered
Hi All,

 we are in the process of  doing application migration where one of  the query executes fine (both Prod & TST)  and we  have another test database where the same query takes 3 hrs - 20 hrs to execute (the objects,rowcounts ,version ,o.s  are the same in all three dbs)

difference i notice in the plan:


i can see the query has different plans and somewhere dev team used parallel in object hence parallel is used making overall execution of the query slow


the dev team has created an index with the name PS_Q_PROJ_RSC(in bad plan) which has different name available in other two dbs but on the same columns,not sure how it is getting used here 

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