Before upgrading to .NET Data Provider for Teradata version 12.00.00.00, please note that application changes may be required due to new feature content provided in this release.
This release includes a 100% managed code implementation of TeraGSS. Some previously supported authentication mechanisms have been removed which may require application changes. A new SPNEGO mechanism is now offered in the TeraGSS client and server configurations. This mechanism utilizes the SPNEGO negotiation protocol to authenticate using Kerberos.
NTLM is no longer supported. The application should specify SPENGO instead of NTLM.
KRB5 is no longer supported. The application should specify SPNEGO instead of KRB5.
TD1, KRB5C, and NTLMC are no longer supported. Applications will not be able to connect to Teradata 5.1 or earlier.
Selecting IntegratedSecurity chooses the highest ranked mechanism that supports SingleSignOn. The default configuration specifies SPNEGO as this mechanism. Previous releases always selected the KRB5 mechanism.
If mechanism selection was previously based on a server default mechanism of KRB5, applications will need to override this by adding AuthenticationMechanism=SPNEGO to their connection string.
Note |
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SPNEGO is disabled by default. It must be enabled from the Teradata Database. Refer to the Teradata Database documentation for more information on activating this mechanism. |
In order to utilize the new SPNEGO authentication mechanism, the following minimum TDGSS E-Fix versions must be installed:
Windows
MP-RAS
LINUX
The algorithm for COP DataSource discovery differs from prior releases. The prior release resolves all DNS entries during the first connection attempt to determine how many entries are in DNS. This is no longer true. Applications should review DataSource Resolution for a full description of the current behavior and may wish to specify a DataSourceDnsEntries property.
ReadAhead is now enabled by default. Prior restrictions related to concurrent LOB retrieval have been removed.
What's New in the .NET Data Provider for Teradata 12.00.00.00