GET TRANSACTION ISOLATION LEVEL
<isolation level spec>
| GET TRANSACTION LOCK TIMEOUT
<timeout spec>
SET TRANSACTION ISOLATION LEVEL
<isolation level spec>
| SET TRANSACTION LOCK TIMEOUT
<timeout spec>
<expression>
| SERIALIZABLE
| CURSOR STABILITY
| <class isolation> [ , <instance isolation> ]
| <instance isolation> [ , <class isolation> ]
REPEATABLE READ { CLASS | SCHEMA }
| READ COMMITTED { CLASS | SCHEMA }
| READ UNCOMMITTED { CLASS | SCHEMA }
REPEATABLE READ INSTANCES
| READ COMMITTED INSTANCES
| READ UNCOMMITTED INSTANCES
INFINITE
| OFF
| <unsigned integer literal>
| <variable>>