16.10 - DBS Control Parameters for Tuning the Workload Cache Limits for Index and Partition Analysis - Teradata Database

Teradata Database Administration

Product
Teradata Database
Release Number
16.10
Release Date
April 2018
Content Type
Administration
Publication ID
B035-1093-161K
Language
English (United States)

Index Wizard processing in Teradata Database allocates workload cache for the purpose of caching information retrieved from the QCD and other temporary working structures and needed during Analysis and Validation phases of recommending indexes and partitioning expressions for various SQL workloads.

Two DBS Control performance group parameters control the respective workload cache sizes for the Analysis and Validation phases.

  • IAMaxWorkloadCache
  • IVMaxWorkloadCache

The following table provides some of the details for these parameters. See Utilities for further information.

           Parameter                              Purpose Valid Range (megabytes)    Default (megabytes)
IAMaxWorkloadCache Defines the maximum size of the Index Wizard workload cache for Analysis operations.

This parameter is applicable to both the INITIATE INDEX ANALYSIS and INITIATE PARTITION ANALYSIS statements.

32 - 256 8
IVMaxWorkloadCache Defines the maximum size of the Index Wizard workload cache for Validation operations.

This parameter is applicable to all SQL statements issued within a session when DIAGNOSTIC “Validate Index” has been enabled.

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