SQL>
SQL> DECLARE
2 --The underlying database datatype for this example is Unicode UTF-16
3 x NCHAR(40) := UNISTR('The character a\0303 could be composed.');
4 BEGIN
5
6 DBMS_OUTPUT.PUT_LINE(INSTRC(x,UNISTR('\0303')));
7
8 --Find the location of "\0303" using INSTR4
9 DBMS_OUTPUT.PUT_LINE(INSTR4(x,UNISTR('\0303')));
10 END;
11 /
PL/SQL procedure successfully completed.