Oracle 11g cast

Question

Hi All,
I've faced one issue with Oracle 11g.
In Oracle 10g when you do:
create table Test as
select Cast(SomeField as nvarchar2(1)) as SomeField from Other_table;
if SomeField type is number(5) and it has value 11 - following error message will be generated:
ORA-12899: value too large for column ???
(actual: 3, maximum: 1)
and that is fair. In Oracle 11g the same operation inserts truncated values i.e. 1 in this example.
Is there a way to make it wok in 11g in the same way as 10g except compatibility parameter changes?
Thank you in advance.

Answer 1

I don't have access to 10g - just 9.2.0.8 vs 11.2.0.2.
See the following output:
SQL> select * from v$version;
BANNER
Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64bit Production
PL/SQL Release 9.2.0.8.0 - Production
CORE    9.2.0.8.0       Production
TNS for Solaris: Version 9.2.0.8.0 - Production
NLSRTL Version 9.2.0.8.0 - Production
SQL>
SQL> select cast('11' as nvarchar2(1)) col1 from dual;
C
1
SQL>
SQL> select cast(11 as nvarchar2(1)) col1 from dual;
select cast(11 as nvarchar2(1)) col1 from dual
ERROR at line 1:
ORA-25137: Data value out of range
SQL>
SQL> create table dom1
  2  (col1 number(5)
  3  ,col2 varchar2(5));
Table created.
SQL>
SQL> insert into dom1 values (11,'11');
1 row created.
SQL>
SQL> select cast(col1 as nvarchar2(1)) from dom1;
select cast(col1 as nvarchar2(1)) from dom1
ERROR at line 1:
ORA-25137: Data value out of range
SQL>
SQL> select cast(col2 as nvarchar2(1)) from dom1;
select cast(col2 as nvarchar2(1)) from dom1
ERROR at line 1:
ORA-01401: inserted value too large for column
SQL>
SQL> create table dom2 as
  2  select Cast(col1 as nvarchar2(1)) as col1 from dom1;
select Cast(col1 as nvarchar2(1)) as col1 from dom1
ERROR at line 2:
ORA-25137: Data value out of range
SQL>
SQL> create table dom2 as
  2  select Cast(col2 as nvarchar2(1)) as col2 from dom1;
select Cast(col2 as nvarchar2(1)) as col2 from dom1
ERROR at line 2:
ORA-01401: inserted value too large for column
SQL> vs
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
CORE    11.2.0.2.0      Production
TNS for Linux: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
SQL>
SQL> select cast('11' as nvarchar2(1)) col1 from dual;
C
1
SQL>
SQL> select cast(11 as nvarchar2(1)) col1 from dual;
select cast(11 as nvarchar2(1)) col1 from dual
ERROR at line 1:
ORA-25137: Data value out of range
SQL>
SQL> create table dom1
  2  (col1 number(5)
  3  ,col2 varchar2(5));
Table created.
SQL>
SQL> insert into dom1 values (11,'11');
1 row created.
SQL>
SQL> select cast(col1 as nvarchar2(1)) from dom1;
select cast(col1 as nvarchar2(1)) from dom1
ERROR at line 1:
ORA-25137: Data value out of range
SQL>
SQL> select cast(col2 as nvarchar2(1)) from dom1;
select cast(col2 as nvarchar2(1)) from dom1
ERROR at line 1:
ORA-01401: inserted value too large for column
SQL>
SQL> create table dom2 as
  2  select Cast(col1 as nvarchar2(1)) as col1 from dom1;
select Cast(col1 as nvarchar2(1)) as col1 from dom1
ERROR at line 2:
ORA-25137: Data value out of range
SQL>
SQL> create table dom2 as
  2  select Cast(col2 as nvarchar2(1)) as col2 from dom1;
select Cast(col2 as nvarchar2(1)) as col2 from dom1
ERROR at line 2:
ORA-01401: inserted value too large for column
SQL>