Can datatype of a field be changed

Hi
I have a live table, but i need to change a field from type number(1) to type number(3). Is there any way to change datatype? Or do i need to delete field and then add the new one?
Thanks
Mark

Here the general way how to change the Oracle table:
SQL> create table test (col1 number(1));
Table created.
SQL> alter table test modify (col1 number(3));
Table altered.
SQL> desc test;
Name Null? Type
COL1 NUMBER(3)
But for a live system it would be better to
- first export the table
- truncate it
- change the precision using the alter command
- import it.
See also Metalink note:111035.1

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Can datatype of a field be changed

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