Enabling Redrive Protection - Teradata Database

Teradata Database Administration

Product
Teradata Database
Release Number
15.10
Language
English (United States)
Last Update
2018-10-06
Product Category
Software

Enabling Redrive Protection

 

To enable Redrive protection...

Do...

at the system level

Set the RedriveProtection DBS Control field to 1.

for all sessions by default

1 Ensure that the RedriveProtection DBS Control field is set to 1.

2 Set the RedriveDefaultParticipation DBS Control field to 1.

at the session level

Set the Redrive field in the Session Options parcel to 'Y'.

at the user, account, or profile level

Insert or modify a row in the TDWM.Redrive table and set the value of the RedriveMethod column to 2 for the user, account, or profile. For details, see “Setting Redrive Protection for Users, Accounts, and Profiles” on page 242.

Note: If any of the following are true, the session will not participate in Redrive:

  • The RedriveProtection DBS Control field is set to 0
  • The Redrive field in the Session Options parcel is set to 'N'
  • There is a row in the TDWM.Redrive table indicating that Redrive is disabled for this session
  • In addition, Recoverable Network Protocol must be enabled in order for you to use Redrive. For details about Recoverable Network Protocol, see the DisableRecoverableNetProtocol DBS Control field in Utilities.

    The Redrive capability is assigned to a session at logon time. Once a session is enabled with Redrive, you can subsequently use the Redrive query band to toggle Redrive protection off and on during the life of the session using this syntax:

       SET QUERY_BAND = 'redrive=on;' FOR SESSION;
       SET QUERY_BAND = 'redrive=off;' FOR SESSION;

    For details on using the Redrive query band, see SQL Data Definition Language Detailed Topics.