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Configuration Element (DTA)

Topic Status: Some information in this topic is preview and subject to change in future releases. Preview information describes new features or changes to existing features in Microsoft SQL Server 2016 Community Technology Preview 2 (CTP2).

Specifies a user-specified configuration consisting of existing and hypothetical physical design structures for the Database Engine Tuning Advisor to analyze when tuning a workload.

<DTAInput>
    <Server>...</Server>
    <Workload>...</Workload>
    <TuningOptions>...</TuningOptions
    <Configuration [SpecificationMode="Relative" | "Absolute"]>
    ...code removed here...
    </Configuration>
</DTAInput>

Configuration Attribute

Description

SpecificationMode

Optional. Specifies whether Database Engine Tuning Advisor should analyze the specified configuration in relation to the current existing configuration, or as a completely new, standalone one. Use a string data type to specify this attribute with one of the following allowed values:

  • Relative

    Evaluates the specified configuration in relation to the current existing configuration of physical design structures (indexes, indexed views, partitioning) in the database that is being tuned. For example:

    <Configuration SpecificationMode="Relative">
    
  • Absolute

    Evaluates the specified configuration as a standalone configuration. When Absolute is specified, Database Engine Tuning Advisor does not consider the existing configuration. For example:

    <Configuration SpecificationMode="Absolute">
    

Characteristic

Description

Data type and length

None.

Default value

None.

Occurrence

Optional. Can use once for each DTAInput element.

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