Update query - updating data from another table.

Question

I have the following tables and data
CREATE TABLE UPD_TEST1
T1_COL1 NUMBER(10),
T1_COL2 VARCHAR2(10 BYTE),
T1_COL3 VARCHAR2(10 BYTE)
INSERT INTO UPD_TEST1 ( T1_COL1, T1_COL2, T1_COL3 ) VALUES (
1, 'raji', 'sis');
INSERT INTO UPD_TEST1 ( T1_COL1, T1_COL2, T1_COL3 ) VALUES (
2, 'manju', 'sis');
INSERT INTO UPD_TEST1 ( T1_COL1, T1_COL2, T1_COL3 ) VALUES (
3, 'chinnu', 'sis');
COMMIT;
CREATE TABLE UPD_TEST2
T2_COL1 NUMBER(10),
T2_COL2 VARCHAR2(10 BYTE),
T2_COL3 VARCHAR2(10 BYTE)
INSERT INTO UPD_TEST2 ( T2_COL1, T2_COL2, T2_COL3 ) VALUES (
1, 'muralee', 'bro');
INSERT INTO UPD_TEST2 ( T2_COL1, T2_COL2, T2_COL3 ) VALUES (
2, 'manoj', 'bro');
INSERT INTO UPD_TEST2 ( T2_COL1, T2_COL2, T2_COL3 ) VALUES (
3, 'manoop', 'bro');
COMMIT;
I need to update the columns of UPD_TEST1 with some values from UPD_TEST2 based on some conditions.
i wanted to update multiple rows at a time.Can it be done using one query..
Anyone please help me.
I have dome some search and got the following query but it can update only one record at a time
UPDATE upd_test1
SET ( t1_col2,t1_col3) =(SELECT t2_col2,t2_col3 FROM upd_test2 WHERE t2_col1 =2)
the following query won't work
UPDATE upd_test1
SET ( t1_col2,t1_col3) =(SELECT t2_col2,t2_col3 FROM upd_test2 WHERE t2_col1 IN (2,3))
ORA-01427: single-row subquery returns more than one row
I wanted to update multiple records at a time

Answer 1

bit weird approach though, but you could try merge
SQL> Select * From Upd_Test1;
   T1_COL1 T1_COL2    T1_COL3
         1 raji       sis
         2 manju      sis
         3 chinnu     sis
SQL> Merge Into Upd_Test1 A Using Upd_Test2 B
  2  On (a.T1_Col1 = b.T2_Col1 and b.t2_col1 in (2,3))
  3  When Matched Then
  4     Update Set
  5                     A.T1_Col2 = B.T2_Col2
  6                     ,a.T1_Col3 = b.T2_Col3;
2 rows merged.
SQL> Select * From Upd_Test1;
   T1_COL1 T1_COL2    T1_COL3
         1 raji       sis
         2 manoj      bro
         3 manoop     broVivek L