Index: testdml.php
===================================================================
RCS file: /cvsroot/moodle/moodle/lib/dml/simpletest/testdml.php,v
retrieving revision 1.68
diff -u -r1.68 testdml.php
--- testdml.php	22 Mar 2010 14:41:57 -0000	1.68
+++ testdml.php	10 Jun 2010 09:07:14 -0000
@@ -2655,8 +2655,12 @@
     function test_concurent_transactions() {
         // Notes about this test:
         // 1- MySQL needs to use one engine with transactions support (InnoDB).
-        // 2- MSSQL needs to have enabled versioning for read committed
-        //    transactions (ALTER DATABASE xxx SET READ_COMMITTED_SNAPSHOT ON)
+        
+	// 2- SQL*Server Native (sqlsrv) and MSSQL needs to have row versioning enabled for
+        // read committed transactions. This must be done when no other connections
+        // exist: "ALTER DATABASE <database> SET READ_COMMITTED_SNAPSHOT ON; GO"
+	// This command can be run from SQL Server Managment Studio
+
         $DB = $this->tdb;
         $dbman = $DB->get_manager();