SLEEP | Usage Notes | Teradata FastLoad - 17.10 - Usage Notes - FastLoad

Teradata® FastLoad Reference

Product
FastLoad
Release Number
17.10
Published
June 2021
Last Update
2021-07-01
Content Type
Programming Reference
Publication ID
B035-2411-061K
Language
English (United States)

The following table describes the things to consider when using the SLEEP command.

Usage Notes for SLEEP 
Topic Usage Notes
Function The SLEEP specification works with the TENACITY specification to control Teradata FastLoad logon attempts.

When Teradata FastLoad tries to log on for a new session, and the database indicates that the maximum number of load sessions is already running, the Teradata FastLoad utility:

  1. Logs off any new sessions that were logged on.
  2. Waits for 6 minutes, by default, or for the amount of time specified by the SLEEP command.

    However, if the amount of time specified by the SLEEP command exceeds that of the TENACITY command, then the sleep interval is reset and equated to the amount of time specified by the TENACITY command.

    For example, if the time specified with the SLEEP command is 65 minutes and the time specified with TENACITY command is 1 hour, then the SLEEP time is reset to 60 minutes so that the SLEEP time does not exceed the TENACITY time.

  3. Tries again to log on to the database.

Teradata FastLoad repeats this process until it has either logged on for the required number of sessions or equates the amount of time specified by the TENACITY command.

The sleep interval specified in the SLEEP command is dynamically adjusted so that the total sleep times does not exceed the amount of time specified by the TENACITY command.
For example, if the time specified with the SLEEP command is 35 minutes and the time specified with the TENACITY command is 1 hour, then:
  • FastLoad sleeps for 35 minutes and then attempts to log on to the database.
  • If the first logon attempt fails, then the SLEEP time is adjusted to 25 minutes so that the total SLEEP time does not exceed the TENACITY time.
Command Placement Command placement affects the logon operation. State the SLEEP and TENACITY commands before the LOGON command in the Teradata FastLoad job script. Teradata FastLoad terminates with an error message if these commands are stated after the LOGON command.
Command Overrides The SLEEP and TENACITY command specifications override the corresponding SLEEP and TENACITY specifications that may be made in the Teradata FastLoad configuration file.

Similarly, the SLEEP and TENACITY command specifications themselves are overridden by the corresponding specifications made as runtime parameters when invoking Teradata FastLoad.

The order of preferences for the SLEEP and TENACITY specifications, from highest to lowest, is:
  1. Runtime parameters
  2. Teradata FastLoad script commands
  3. Teradata FastLoad configuration file specifications
  4. Teradata FastLoad default values