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Optimized merge with composite primary key

Is it possible to execute an optimized merge with multiple columns in on clause where the target table has a composite key?


Something similar to 

MERGE INTO table1 t1 USING table2 t2 on (t1.col1 = t2.col1 and t1.col2 = t2.col2)
WHEN MATCHED THEN UPDATE SET col1 = t2.col1, col2 = t2.col2

where t1 has a primary key defined as CONSTRAINT composite_pk PRIMARY KEY (col1, col2)


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