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Configuration Element (DTA)

  • Artikkeli

Applies to: SQL Server

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.

Syntax

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

Element Attributes

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">

Element Characteristics

Characteristic Description
Data type and length None.
Default value None.
Occurrence Optional. Can use once for each DTAInput element.

Element Relationships

Relationship Elements
Parent element DTAInput Element (DTA)
Child elements Server Element for Configuration (DTA)

Example

For a usage example of this element, see the XML Input File Sample with User-specified Configuration (DTA).

See Also

XML Input File Reference (Database Engine Tuning Advisor)