Index: NETProvider/source/FirebirdSql/Data/Isql/FbBatchExecution.cs
===================================================================
--- NETProvider/source/FirebirdSql/Data/Isql/FbBatchExecution.cs	(revision 51301)
+++ NETProvider/source/FirebirdSql/Data/Isql/FbBatchExecution.cs	(working copy)
@@ -265,6 +265,7 @@
                             this.OnCommandExecuted(sqlStatement, null, -1);
                             break;
 
+                        case SqlStatementType.CommentOn:
                         case SqlStatementType.CreateDomain:
                         case SqlStatementType.CreateException:
                         case SqlStatementType.CreateGenerator:
@@ -781,6 +782,10 @@
                     {
                         return SqlStatementType.AlterProcedure;
                     }
+                    if (StringParser.StartsWith(sqlStatement, "ALTER SEQUENCE", true))
+                    {
+                        return SqlStatementType.SetGenerator;
+                    }
                     if (StringParser.StartsWith(sqlStatement, "ALTER TABLE", true))
                     {
                         return SqlStatementType.AlterTable;
@@ -802,6 +807,10 @@
                             throw new Exception("The type of the SQL statement could not be determinated.");
 
                         case 'O':
+                            if (StringParser.StartsWith(sqlStatement, "COMMENT ON", true))
+                            {
+                                return SqlStatementType.CommentOn;
+                            }
                             if (StringParser.StartsWith(sqlStatement, "COMMIT", true))
                             {
                                 return SqlStatementType.Commit;
Index: NETProvider/source/FirebirdSql/Data/Isql/SqlStatementType.cs
===================================================================
--- NETProvider/source/FirebirdSql/Data/Isql/SqlStatementType.cs	(revision 51301)
+++ NETProvider/source/FirebirdSql/Data/Isql/SqlStatementType.cs	(working copy)
@@ -69,6 +69,11 @@
         Close,
 
         /// <summary>
+        /// Represents the SQL statement: <b>COMMENT ON</b>
+        /// </summary>
+        CommentOn,
+
+		/// <summary>
         /// Represents the SQL statement: <b>COMMIT</b>
         /// </summary>
         Commit,