Interpreting Oracle Explain Plan Output - John Mullins

[@patela21]

full table scans are not always deceptive, considering the query not being optimized properly and hitting large tables multiple times. The explain plan would go for 'direct path read' wait events, so the optimizer will not put the query in the SGA buffer cache instead forces the execution entirely pinning against PGA. This favors the quickest output fetch with a bit downside to the I/O during the query execution.

[@harsimranjitsingh7989]

This is best video i have ever seen on explain plan

[@nonamechannel9578]

Super explanation...Very very helpful and informative. To the point, well navigated and no crap..

[@С.Семенчук]

Cross join isn't a join method. It is a join type (like inner join) and commonly uses merge join method to accomplish

[@parakhagarwal7141]

thanks a lot for a really informative video.. Can we have examples of queries which would result in different index access method and join methods ? That would really be helpful

[@ztech4634]

Very informative and helpful. Great job.

[@galeop]

Great stuff!
29:12 are we talking about bitmap *indexes* ?

[@tirud5782]

Excellent information, very useful for beginners

[@kuipersam]

How to investigate this without access to production data? Is there something to 'copy statistics' from production to a test system?

[@performancetesting5227]

Awesome Video. Lots of topics cleared.

[@Gbd279]

a valuable follow up video would be to see these considerations being implemented

[@javeed939]

sir how did you decide order of operations

[@satyaprakashpandit1936]

To the point explanation.

[@vishnuofmillenium]

very well explained

[@pankajmatani4648]

Very Helpful Video. Thank you sir :)

[@mukherjeer]

awesome explanation. thanks man. you rock

[@shashikrishna3481]

Thank you so much!

[@sajitswain]

Thanks a lot. Very useful video.

[@shoaibabdul5428]

very very informative! amazing

[@sivaranjani718]

Good explanation !! Thanks !!!

[@GeraldoBertoli]

Thanks!!!!!!! Great video.

[@himanshuchandra2808]

great video.

[@diltajchhina]

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[@tusharkumar7424]

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