Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 435 Server version: 5.5.35-0ubuntu0.12.04.2 (Ubuntu) Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> SET TRANSACTION ISOLATION LEVEL READ COMMITTED; Query OK, 0 rows affected (0.00 sec) mysql> SELECT * FROM information_schema.global_variables WHERE -> variable_name = 'tx_isolation'; +---------------+-----------------+ | VARIABLE_NAME | VARIABLE_VALUE | +---------------+-----------------+ | TX_ISOLATION | REPEATABLE-READ | +---------------+-----------------+ 1 row in set (0.01 sec) mysql>