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Windows Authentication on Microsoft SQL Server

Windows authentication means creating a database connection to Microsoft SQL Server while leaving User and Password blank (see figure below). Accessing the MS SQL database, the JTDS driver uses your Windows account to log in. The JTDS driver depends on native libraries you have to install. To enable this all, follow the steps described in this section.

Connecting to MS SQL with Windows authentication.

Figure 33.9. Connecting to MS SQL with Windows authentication.


Clover comes with a JDBC driver from JDTS. However, it does not provide native libraries which are required for JDTS to work with Windows authentication on Microsoft SQL Server. Thus, it is necessary to download that native dll (ntlmauth.dll) and perform some additional settings.

Getting the Native Library

Clover supports JTDS v. 1.2.8. The download instructions are:

  1. Get the dist package.

  2. Extract the contents and go to folder x64\SSO, or x86\SSO.

  3. ntlmauth.dll is located there. Copy the file (for 64b or 32b version of Clover, respectively) to a folder, e.g. C:\jtds_dll

Installation

Now there are two ways how to make the dll work. The first one involves changing Windows PATH variables. If you do not want to do that, go for the second option.

  1. Add the absolute path to the dll file (C:\jtds_dll) to the Windows PATH variable. Alternatively, you can put the dll file to some folder which is already included in PATH, e.g C:\WINDOWS\system32.

  2. Modify the java.library.path property for all members of the CloverETL Family of products:

    • Designer

      Modify VM Parameters in the graph's Chapter 14, Runtime Configuration screen (see figure below). Add this line to VM parameters:

      -Djava.library.path=C:\jtds_dll

      [Note]Note

      The runtime configuration is valid for all graph within the same workspace.

      Adding path to the native dll to VM parameters.

      Figure 33.10. Adding path to the native dll to VM parameters.


    • Clover Server

      In the script that starts Tomcat, add the -Djava.library.path=C:\jtds_dll option to JAVA_OPT. For example, add the following line at the beginning of catalina.bat:

      set JAVA_OPTS=%JAVA_OPTS% -Djava.library.path=C:\jtds_dll

  3. MS SQL Server - make sure you have:

    • TCP/IP Enabled in SQL Server Network Configuration → Protocols

    • TCP Port set to 1433 in TCP/IP Properties → IP Addresses → IPAll

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