SET DELETED OFF
SET MULTILOCK ON

USE mytable AGAIN SHARED
CURSORSETPROP("buffering", 5)

SELECT f1, f2 ;
FROM mytable ;
WHERE f1 = "111" ;
INTO CURSOR mycursor

INDEX ON f1 TAG f1 OF mycdx.cdx           
&& ERROR - 1579 Command cannot be issued on a table with cursors in table buffering mode.