Query OK, 0 rows affected (0.02 sec)
OceanBase(TEST@TEST)>set @@tx_isolation = 'read-what';
ORA-00600: internal error code, arguments: -5145, Variable 'tx_isolation' can't be set to the value of 'read-what'
OceanBase(TEST@TEST)>set @@tx_isolation = 'read-committed';
Query OK, 0 rows affected (0.01 sec)
OceanBase(TEST@TEST)>select @a,@b,@c,@@tx_isolation from dual;
| @A   | @B   | @C   | @@TX_ISOLATION |
+------+------+------+----------------+
|    1 |    2 |    3 | read-committed |