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Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / AX 2012 R3 & MSSQL...
Microsoft Dynamics AX (Archived)

AX 2012 R3 & MSSQL 2016 - MDOP (max degree of parallelism)

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Posted on by Felix Oxley 1,347

Hi,

We are running AX 2012 R3 on MSSQL 2016 (in an active/passive configuration with local storage)

Our db servers are dual socket x 6 cores with SMT = 2 x 6 x 2 = 24 threads

We are monitoring our servers with Log Analytics (in Azure operations Management Suite)

Log Analytics Health Check is recommending that we increase the MDOP setting for SQL from its current value of 4.

However, I found this Technet article from 2015 relating to AX 2012 R3 which says:

"When the Microsoft Dynamics AX database is used in a production environment, set max degree of parallelism to 1"

Is this advice correct?

technet.microsoft.com/.../dd309734.aspx

Thanks

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  • Suggested answer
    Anton Venter Profile Picture
    Anton Venter 20,346 Super User 2025 Season 2 on at

    Yes, the recommended value for AX is 1. I have only seen the MDOP value set to 4 during a data upgrade of a 6TB database.

  • Verified answer
    Hassan_rulz Profile Picture
    Hassan_rulz 3,801 on at

    Yes its recommended on technet to set MDOP to 1 but I have seen and gained better performance by setting MDOP between 4-8. It all depend on CPU cores which your DB server have. As in my case, My DB server has 16 cores.

    I would recommend you as well the same.

  • Felix Oxley Profile Picture
    Felix Oxley 1,347 on at

    Thanks - I'll try setting it to 6 and see if the is any measureable change.

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