Remove sqljdbc_xa.dll: drop legacy XA extended-procedure DLL

README.md

@@ -74,7 +74,7 @@ This driver is documented on [Microsoft Docs](https://docs.microsoft.com/sql/con
 For samples, please see the `src\sample` directory.
 
 ### Download the DLLs
-For some features (e.g. Integrated Authentication and Distributed Transactions), you may need to use the `sqljdbc_xa` and `mssql-jdbc_auth-<version>.<arch>` DLLs. They can be found in the package that can be downloaded from [Microsoft](https://aka.ms/downloadmssqljdbc). `mssql-jdbc_auth-<version>.<arch>` can also be downloaded from [Maven](https://mvnrepository.com/artifact/com.microsoft.sqlserver/mssql-jdbc_auth).
+For some features (e.g. Integrated Authentication), you may need to use the `mssql-jdbc_auth-<version>.<arch>` DLL. It can be found in the package that can be downloaded from [Microsoft](https://aka.ms/downloadmssqljdbc). `mssql-jdbc_auth-<version>.<arch>` can also be downloaded from [Maven](https://mvnrepository.com/artifact/com.microsoft.sqlserver/mssql-jdbc_auth). For Distributed Transactions (XA), the required extended stored procedures are built into SQL Server 2017 and later and can be installed by running `EXEC sp_sqljdbc_xa_install` on the server.
 
 ### Download the driver
 Don't want to compile anything?

src/main/java/com/microsoft/sqlserver/jdbc/DLLException.java

@@ -10,7 +10,7 @@
 
 /**
  * 
- * This class is used to handle exceptions that may be received from mssql-jdbc_auth DLL and sqljdbc_xa DLL.
+ * This class is used to handle exceptions that may be received from the mssql-jdbc_auth DLL.
  *
  */
 class DLLException extends Exception {

src/test/java/com/microsoft/sqlserver/jdbc/statemachinetest/xa/XAStateTest.java

@@ -195,7 +195,7 @@ private static boolean isXANotInstalledError(Throwable e) {
             if ((msg != null && msg.toLowerCase().contains("xp_sqljdbc_xa")) ||
                     (fullMsg != null && fullMsg.toLowerCase().contains("xp_sqljdbc_xa"))) {
                 System.out.println("XA not supported: XA stored procedures not found");
-                System.out.println("  Solution: Run xa_install.sql script on SQL Server");
+                System.out.println("  Solution: Enable XA on SQL Server 2017+ by running EXEC sp_sqljdbc_xa_install");
                 return true;
             }
 
@@ -207,7 +207,7 @@ private static boolean isXANotInstalledError(Throwable e) {
                             fullMsg.toLowerCase().contains("xa control connection") ||
                             fullMsg.toLowerCase().contains("could not load the dll")))) {
                 System.out.println("XA not supported: " + msg);
-                System.out.println("  Solution: Install sqljdbc_xa.dll in SQL Server Binn directory and unblock it");
+                System.out.println("  Solution: Enable XA on SQL Server 2017+ by running EXEC sp_sqljdbc_xa_install");
                 return true;
             }
 
@@ -270,7 +270,7 @@ void testRandomizedXATransactions() throws Exception {
         logTestProgress("testRandomizedXATransactions - Checking XA support");
         boolean xaSupported = isXASupported(connectionString);
         Assumptions.assumeTrue(xaSupported, 
-            "XA distributed transactions not supported - install xa_install.sql on SQL Server");
+            "XA distributed transactions not supported - enable XA on SQL Server 2017+ via EXEC sp_sqljdbc_xa_install");
         logTestProgress("testRandomizedXATransactions - XA support confirmed");
 
         SQLServerXADataSource ds = new SQLServerXADataSource();