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Swaminathan KFlag for India

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need help on explain plan oracle sql

Hi ,

Iam new to sql tuning , I have been asked to run an explain plan for an query and provide possible solutions for tuning thehelp  query

I need help on reading and analyzing the explain plan, below is  the output of my plan table , any help in explaining the plan is very much appreciated.

Attached is   the  plan . Kindly help me in understanding the output.
sql1.txt
SOLUTION
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