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Optimising OData Refresh Efficiency in Energy Question for Energy BI and Excel

OData has been adopted by many software program options and has been round for a few years. Most options are utilizing the OData is to serve their transactional processes. However as we all know, Energy BI is an analytical answer that may fetch a whole bunch of 1000’s (or hundreds of thousands) rows of knowledge in a single desk. So, clearly, OData isn’t optimised for that sort of objective. One of many greatest challenges many Energy BI builders face when working with OData connections is efficiency points. The efficiency is dependent upon quite a few components comparable to the scale of tables within the backend database that the OData connection is serving, peak learn information quantity over intervals of time, throttling mechanism to manage over-utilisation of assets and many others…

So, typically talking, we don’t count on to get a blazing quick information refresh efficiency over OData connections, that’s why in lots of circumstances utilizing OData connections for analytical instruments comparable to Energy BI is discouraged. So, what are the options or alternate options if we don’t use OData connections in Energy BI? Nicely, the most effective answer is emigrate the information into an middleman repository, comparable to Azure SQL Database or Azure Information Lake Retailer or perhaps a easy Azure Storage Account, then join from Energy BI to that database. We should determine on the middleman repository relying on the enterprise necessities, expertise preferences, prices, desired information latency, future help requirement and experience and many others…

However, what if we shouldn’t have every other choices for now, and we’ve to make use of OData connection in Energy BI with out blasting the scale and prices of the undertaking by transferring the information to an middleman house? And.. let’s face it, many organisations dislike the thought of utilizing an middleman house for varied causes. The only one is that they merely can’t afford the related prices of utilizing middleman storage or they don’t have the experience to help the answer in long run.

On this submit, I’m not discussing the options involving any alternate options; as a substitute, I present some suggestions and methods that may enhance the efficiency of your information refreshes over OData connections in Energy BI.


The ideas on this submit is not going to provide you with blazing-fast information refresh efficiency over OData, however they’ll assist you to to enhance the information refresh efficiency. So in case you take all of the actions defined on this submit and you continue to don’t get a suitable efficiency, then you definitely may want to consider the alternate options and transfer your information right into a central repository.

If you’re getting information from a D365 information supply, chances are you’ll need to take a look at some alternate options to OData connection comparable to Dataverse (SQL Endpoint), D365 Dataverse (Legacy) or Widespread Information Providers (CDS). However take into accout, even these connectors have some limitations and may not provide you with a suitable information refresh efficiency. As an illustration, Dataverse (SQL Endpoint) has 80MB desk dimension limitation. There is likely to be another causes for not getting a superb efficiency over these connections comparable to having further huge tables. Imagine me, I’ve seen some tables with greater than 800 columns.

Some ideas on this submit apply to different information sources and aren’t restricted to OData connections solely.

Suggestion 1: Measure the information supply dimension

It’s at all times good to have an thought of the scale of the information supply we’re coping with and OData connection is not any completely different. In reality, the backend tables on OData sources will be wast. I wrote a weblog submit round that earlier than, so I counsel you employ the customized perform I wrote to grasp the scale of the information supply. In case your information supply is massive, then the question in that submit takes a very long time to get the outcomes, however you may filter the tables to get the outcomes faster.

Suggestion 2: Keep away from getting throttled

As talked about earlier, many options have some throttling mechanisms to manage the over-utilisation of assets. Sending many API requests might set off throttling which limits our entry to the information for a brief time frame. Throughout that interval, our calls are redirected to a distinct URL.

Tip 1: Disabling Parallel Loading of Tables

One of many many causes that Energy BI requests many API calls is loading the information into a number of tables in Parallel. We are able to disable this setting from Energy BI Desktop by following these steps:

  1. Click on the File menu
  2. Click on Choices and settings
  3. Click on Choices
  4. Click on the Information Load tab from the CURREN FILE part
  5. Untick the Allow parallel loading of tables choice
Disabling Parallel Loading of Tables in Power BI
Disabling Parallel Loading of Tables in Energy BI Desktop

With this selection disabled, the tables will get refreshed sequentially, which considerably decreases the variety of calls, due to this fact, we don’t get throttled prematurely.

Tip 2: Avoiding A number of Calls in Energy Question

One more reason (of many) that the OData calls in Energy BI get throttled is that Energy Question calls the identical API a number of instances. There are various recognized causes that Energy Question runs a question a number of instances comparable to checking for information privateness or the way in which that the connector is constructed or having referencing queries. Here’s a complete record of causes for operating queries a number of instances and the methods to keep away from them.

Tip 3: Delaying OData Calls

You probably have carried out all of the above and you continue to get throttled, then it’s a good suggestion to evaluate your queries in Energy Question and look to see you probably have used any customized capabilities. Particularly, if the customized perform appends information, then it’s extremely seemingly that invoking perform is the perpetrator. The wonderful Chris Webb explains easy methods to use the Operate.InvokeAfter() perform on his weblog submit right here.

Suggestion 3: Think about Querying OData As an alternative of Loading the Total Desk

This is without doubt one of the greatest methods to optimise information load efficiency over OData connections in Energy BI. As talked about earlier, some backend tables uncovered through OData are fairly huge with a whole bunch (if not 1000’s) of columns. A typical mistake many people make is that we merely use the OData connector and get your entire desk and suppose that we’ll take away all of the pointless columns later. If the underlying desk is massive then we’re in hassle. Fortunately, we will use OData queries within the OData connector in Energy BI. You possibly can study extra about OData Querying Choices right here.

If you’re coming from an SQL background, then chances are you’ll love this one as a lot I do.

Let’s take a look on the OData question choices with an instance. I’m utilizing the official check information from the OData web site.

  1. I initially load the OData URL within the Energy Question Editor from Energy BI Desktop utilizing the OData connector
Using OData connector in Power BI Desktop
Utilizing OData connector in Energy BI Desktop
  1. Choose the tables, bear in mind we’ll change the Supply of every desk later
Selecting the tables from an OData connection
Deciding on the tables from an OData connection


That is what many people sometimes do. We connect with the supply and get all tables. Hopefully we get solely the required ones. However, the entire objective of this submit isn’t to take action. Within the subsequent few steps, we alter the Supply step.

  1. Within the Energy Question Editor, choose the specified question from the Queries pane, I chosen the PersonDetails desk
  2. Click on the Superior Editor button
Advanced Editor in the Power Query Editor
Superior Editor within the Energy Question Editor
  1. Exchange the OData URL with an OData question
Querying OData in Power Query in Power BI
Querying OData in Energy Question in Energy BI
  1. Click on Carried out

As you may see, we will choose solely the required columns from the desk. Listed below are the outcomes of operating the previous question:

Querying OData in Power Query
Getting information utilizing OData question

In real-wrold eventualities, as you may think about, the efficiency of operating a question over an OData connection can be significantly better than getting all columns from the identical connection after which eradicating undesirable ones.

The probabilities are infinite on the subject of querying a knowledge supply and OData querying in no completely different. As an illustration, let’s say we require to analyse the information for folks older than 24. So we will slender down the variety of rows by including a filter to the question. Listed below are the outcomes:

Using OData query filter
Utilizing OData question filter

Some Further Sources to Study Extra

Listed below are some invaluable assets on your reference:

Whereas I used to be searching for the assets I discovered the next wonderful weblogs. There are superb reads:

As at all times, I might be completely happy to find out about your opinion and expertise, so go away your feedback under.

Have enjoyable!



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