Interpreting Oracle Explain Plan Output - John Mullins

[@harsimranjitsingh7989]

This is best video i have ever seen on explain plan

[@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.

[@nonamechannel9578]

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

[@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.

[@tirud5782]

Excellent information, very useful for beginners

[@Gbd279]

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

[@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

[@performancetesting5227]

Awesome Video. Lots of topics cleared.

[@satyaprakashpandit1936]

To the point explanation.

[@vishnuofmillenium]

very well explained

[@galeop]

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

[@pankajmatani4648]

Very Helpful Video. Thank you sir :)

[@mukherjeer]

awesome explanation. thanks man. you rock

[@kuipersam]

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

[@sajitswain]

Thanks a lot. Very useful video.

[@shoaibabdul5428]

very very informative! amazing

[@sivaranjani718]

Good explanation !! Thanks !!!

[@GeraldoBertoli]

Thanks!!!!!!! Great video.

[@shashikrishna3481]

Thank you so much!

[@javeed939]

sir how did you decide order of operations

[@himanshuchandra2808]

great video.

[@diltajchhina]

ੳਰੇਕਲ ਜਿਂਦਾਬਾਦ

[@tusharkumar7424]

Became ur fan