config root man

SET @global_saved_tmp =  @@global.offline_mode;
SET @global_autocommit =  @@global.autocommit;
SET @@global.autocommit= OFF;
CREATE USER 'user1'@'localhost';
CREATE USER 'user2'@'localhost';
connect conu1,localhost,user1;
START TRANSACTION;
DROP TABLE IF EXISTS t2;
CREATE TABLE t2 (c1 int,c2 char(10));
INSERT INTO t2 VALUES (1,'aaaaaaaaaa');
COMMIT;
INSERT INTO t2 VALUES (2,'bbbbbbbbbb');
connect conu2,localhost,user2;
START TRANSACTION;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (c1 int,c2 char(10)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,'aaaaaaaaaa');
COMMIT;
INSERT INTO t1 VALUES (2,'bbbbbbbbbb');
connection default;
SET GLOBAL offline_mode = ON;
SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
COUNT(USER)
1
SET GLOBAL offline_mode = OFF;
disconnect conu1;
disconnect conu2;
connect conu1,localhost,user1;
SELECT * FROM t2 ORDER BY c1;
c1	c2
1	aaaaaaaaaa
DROP TABLE t2;
connect conu2,localhost,user2;
SELECT * FROM t1 ORDER BY c1;
c1	c2
1	aaaaaaaaaa
2	bbbbbbbbbb
DROP TABLE t1;
connection default;
SET GLOBAL offline_mode = ON;
SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
COUNT(USER)
1
disconnect conu1;
disconnect conu2;
DROP USER 'user1'@'localhost';
DROP USER 'user2'@'localhost';
# Restoring the original values.
SET @@global.offline_mode = @global_saved_tmp;
SET @@global.autocommit= @global_autocommit;