Read and Write Requests for Managed Sessions | Teradata Unity - 17.00 - Read and Write Requests for Managed Sessions - Continuous Availability - Teradata Unity

Teradata® Unity™ User Guide

Product
Continuous Availability
Teradata Unity
Release Number
17.00
Published
September 2020
Language
English (United States)
Last Update
2020-09-15
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The following table shows when SQL statements are allowed depending on the Teradata Database or table state.

Teradata Database or Table State Read Requests Write Requests
Active Yes Yes
Read-Only Yes No
Standby No (as long as there is another Active copy of the table or system) Yes
Out-of-Service No No
Disconnected No No
Interrupted No No
Restore No No
Unrecoverable No No
Write requests are rejected if there are no systems where the table is in an Active or Standby state.