Oracle_scripte/Tanel/experiments/lob_select_for_update.sql
2014-09-17 13:23:48 +02:00

34 lines
614 B
SQL

DROP TABLE tlob;
CREATE TABLE tlob (a INT, b CLOB);
INSERT INTO tlob VALUES(1, LPAD('x',2048,'x'));
UPDATE tlob SET b = b||b;
UPDATE tlob SET b = b||b;
UPDATE tlob SET b = b||b;
UPDATE tlob SET b = b||b;
UPDATE tlob SET b = b||b;
UPDATE tlob SET b = b||b;
UPDATE tlob SET b = b||b;
UPDATE tlob SET b = b||b;
UPDATE tlob SET b = b||b;
COMMIT;
SELECT DBMS_LOB.GETLENGTH(b) FROM tlob;
DROP TABLE tdummy;
CREATE table tdummy AS SELECT * FROM all_objects;
DELETE tdummy;
ALTER SYSTEM CHECKPOINT;
ALTER SYSTEM SWITCH LOGFILE;
SELECT * FROM tlob WHERE a=1 FOR UPDATE;
COMMIT;
@log
ALTER SYSTEM SWITCH LOGFILE;