Using Host Utility Locks - TARA/ABU

Teradata Archive/Recovery Utility Reference

Product
TARA/ABU
Release Number
15.00
Language
English (United States)
Last Update
2018-09-25
dita:id
B035-2412
lifecycle
previous
Product Category
Teradata Tools and Utilities

Using Host Utility Locks

A Host Utility (HUT) lock, also referred to as a utility lock in this book, is the lock that Teradata ARC places when most Teradata ARC commands are executed. Exceptions are CHECKPOINT, DELETE DATABASE, and DELETE JOURNAL. When Teradata ARC places a HUT lock on a object, for example, with an ARCHIVE or RESTORE command, the following conditions apply:

  • HUT locks are associated with the currently logged-on user who entered the statement, not with a job or transaction.
  • HUT locks are placed only on the AMPs that are participating in a Teradata ARC operation.
  • A HUT lock that is placed for a user on an object at one level never conflicts with another level of lock on the same object for the same user.
  • The ShowLocks utility, described in Utilities, shows the HUT locks that are currently applied to a Teradata Database.