INTERVAL '123 2:25:45.12' DAY(3) TO SECOND(2): Interval of 123 days 2 hours 25 minutes 45.12 seconds; the precision for days is 3 digits and the precision for the fractional seconds is 2 digits : Time Interval « SQL Data Types « Oracle PL/SQL Tutorial

1. Oracle PL/SQL Tutorial
2. SQL Data Types
3. Time Interval

SQL>
SQL> CREATE TABLE myTable (
  2    id INTEGER,
  3    duration INTERVAL DAY(3) TO SECOND (4)
  4  );

Table created.

SQL> INSERT INTO myTable (id, duration)VALUES (6, INTERVAL '3 2:25:45.12' DAY TO SECOND);

1 row created.

SQL>
SQL> select * from myTable;

        ID DURATION
---------- ---------------------------------------------------------------------------
         6 +003 02:25:45.1200

SQL>
SQL>
SQL> drop table myTable;

Table dropped.

SQL>