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Plan Visualizer - performance

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All,

 

thank you for your time in reading this question. I am analyzing the plan visualizer on a stored proc call to a view that I have on a HANA system running on SP10 v03.

 

I have been reading this page to see how I can decipher the plan visualizer and all the metrics shown on the screen

 

http://help.sap.com/saphelp_hanaplatform/helpdata/en/fe/1c8441bc7c4d8cb5d5fb1e02bab843/content.htm?frameset=/en/c1/f281fbbb571014aaf38a264c0e12c4/frameset.htm&current_toc=/en/85/d132c3f05e40a2b20c25aa5fd6331b/plain.htm&node_id=166

 

I have some questions which are not explained on the page above:

 

1) there is a step called "deleteTempIndices" taking 1062ms - something HANA is doing internally.. nothing I can figure out why or where that is being done. any information about these TempIndices?

 

2) What is "Inverted index: not used but present" -  it doesn't say how long but I would like to understand this step

 

3) what is overallQoExecution?

 

is there another way I can see this.. maybe exported to a file / table ?

 

further on the page above, I see this sentence:

This view is mainly targeted towards advanced users who are well acquainted with the core details of SAP HANA

 

which again I don't consider myself an advanced user as I don't know what those things mean, but if I had an understanding of what those things mean or at least better clarity on all these metrics, I may have enough time to figure it out. is this even available for public knowledge or only internal to SAP?

 

 

thank you for your time.


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