Implement time window in procedures in Oracle -

the procedure unable execute,i invalid error statement

create or replace procedure test declare current_time1 varchar(10); begin    select to_char(systimestamp,'hh:mi.am') current_time1 dual    if(current_time1 between '09:00.am' , '05:00.pm')then      dbms_output.put_line (current_time1);    else       dbms_output.put_line ('unable insert');    end if;  end; 

sql> select sysdate dual;  sysdate                                                                          -------------------                                                              20.03.2014 18:17:13                                                               sql> create or replace procedure test   2    3  begin   4     5    if sysdate between trunc(sysdate,'dd')+interval '9' hour   6        , trunc(sysdate,'dd')+interval '17' hour   7      8     9       dbms_output.put_line(sysdate);  10    11    else  12    13      dbms_output.put_line ('unable insert');  14    15    end if;  16    17  end;  18  /   sql> exec test unable insert                                                                   sql> create or replace procedure test   2    3  begin   4     5    if sysdate between trunc(sysdate,'dd')+interval '9' hour   6        , trunc(sysdate,'dd')+interval '19' hour   7      8     9       dbms_output.put_line(sysdate);  10    11    else  12    13      dbms_output.put_line ('unable insert');  14    15    end if;  16    17  end;  18  /  sql> exec test 20.03.2014 18:18:01   

p.s.

sql> select trunc(sysdate) + interval '9' hour + interval '15' minute dual;  trunc(sysdate)+inte                                                              -------------------                                                              21.03.2014 09:15:00                                                               sql> select trunc(sysdate) + numtodsinterval(9.25,'hour') dual;  trunc(sysdate)+numt                                                              -------------------                                                              21.03.2014 09:15:00                                                               sql> select trunc(sysdate) + numtodsinterval(9,'hour')+numtodsinterval(15,'minute') dual;  trunc(sysdate)+numt                                                              -------------------                                                              21.03.2014 09:15:00