UncompressReservedSpace - Teradata Vantage - Database Engine 20

Database Utilities

Deployment
VantageCloud
VantageCore
Edition
VMware
Enterprise
IntelliFlex
Product
Database Engine 20
Teradata Vantage
Release Number
20.00
Published
June 2025
ft:locale
en-US
ft:lastEdition
2026-03-26
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vkz1472241255652
lifecycle
latest
Product Category
Teradata Vantageā„¢

Specifies the minimum percentage of storage space that must remain available while DBs are uncompressed using the Ferret UNCOMPRESS command. The uncompress operation is terminated at the point where this threshold would be exceeded.

Field Group

Compression

Valid Range

1 through 90%

Default

20%

Changes Take Effect

After the DBS Control Record has been written.

Usage Notes

The table undergoing decompression at the time this field value is exceeded may remain in a partially compressed state. This will not affect the functioning of the table or database. To make the table DBs consistent with respect to compression, either issue the Ferret COMPRESS command, or free some storage space, then reissue the UNCOMPRESS command.

Set this field to represent the expected peak amount of required spool space.

Related Information

For more information on... See...
COMPRESS and UNCOMPRESS commands Ferret Utility (ferret).