17.05 - Example: Use Constant Expression to Modify PERM, SPOOL, and TEMPORARY Database Spaces - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Syntax and Examples

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
Release Date
January 2021
Content Type
Programming Reference
Publication ID
B035-1144-175K
Language
English (United States)

The following statement modifies the PERM space for database production_development to a size based on the constant expression 3,000,000 * (HASHAMP()+1), SPOOL to a size based on the constant expression 3,000,000 * (HASHAMP()+1), and TEMPORARY to a size based on the constant expression 3,000,000 * (HASHAMP()+1). The expressions calculate the number of AMPs in the current system and scale the PERM, SPOOL, and TEMPORARY space for the production_development database to that size.

This is the original definition of database production_development.

     CREATE DATABASE production_development AS
       DEFAULT DATABASE = it_dev,
       PASSWORD = (EXPIRE = 0),
       PERM = 2000000*(HASHAMP()+1),
       SPOOL = 2000000*(HASHAMP()+1),
       TEMPORARY = 2000000*(HASHAMP()+1);

The following MODIFY DATABASE request changes the PERM, SPOOL, and TEMPORARY space allocations for this database as follows.

     MODIFY DATABASE production_development AS
       DEFAULT DATABASE = it_dev,
       PASSWORD = (EXPIRE = 0),
       PERM = 3000000*(HASHAMP()+1),
       SPOOL = 3000000*(HASHAMP()+1),
       TEMPORARY = 3000000*(HASHAMP()+1);