Example: Modifying PERM, SPOOL, and TEMPORARY Space Using Constant Expression - Teradata Vantage

Teradata® VantageCloud Lake

Deployment
VantageCloud
Edition
Lake
Product
Teradata Vantage
Published
January 2023
ft:locale
en-US
ft:lastEdition
2024-12-11
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phg1621910019905.ditamap
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pny1626732985837.ditaval
dita:id
phg1621910019905

This example creates PERM space for a user with a size based on the constant expression 2,000,000 (HASHAMP()+1), SPOOL space with a size based on the same constant expression, 2,000,000 (HASHAMP()+1), and TEMPORARY space with a size based on the constant expression 2,000,000 (HASHAMP()+1). The expressions calculate the number of AMPs in the current system and scale the PERM, SPOOL, and TEMPORARY space for the sls120639 user to that size.

This is the original definition of user sls120639.

CREATE USER sls120639 AS
  DEFAULT DATABASE = it_dev,
  PASSWORD = (EXPIRE = 0),
  PERM = 2000000*(HASHAMP()+1),
  SPOOL = 2000000*(HASHAMP()+1),
  TEMPORARY = 2000000*(HASHAMP()+1);

The following MODIFY USER statement changes the PERM, SPOOL, and TEMPORARY space allocations for this user as follows.

MODIFY USER sls120639 AS
  DEFAULT DATABASE = it_dev,
  PASSWORD = (EXPIRE = 0),
  PERM = 3000000*(HASHAMP()+1),
  SPOOL = 3000000*(HASHAMP()+1)
  TEMPORARY = 3000000*(HASHAMP()+1);