Communicating with the Database - Teradata Director Program

Teradata® Director Program Reference - 17.20

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
Lake
VMware
Product
Teradata Director Program
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-11-17
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Product Category
Teradata Tools and Utilities

To communicate with the database using NPs or CCU-type CPs, storage is automatically managed by TDP to balance performance with storage utilization. The amount of storage used varies with demand, storage being obtained, re-used, or freed according to internal algorithms, with all such storage available to any NP or CCU-type CP. The minimum and maximum amounts of storage that can be used varies with the number of such CPs and NPs that are STARTed and for CPs, the INITIAL IACMODE. The type of storage depends upon the INITIAL IACMODE specification, based on underlying operating system limitations. 31-bit storage fixed in real storage is used if the IACMODE is EXCPVR, IOSDRIVR, or DIAG98. Unlike the TDP cells, no configuration or tuning is required. However, the maximum can be limited by using fewer CPs or NPs, or for CPs by using IACMODE EXCP.