Fehler PL/SQL gespeicherte Prozedur

Question

Dies ist der Code, den ich in PL/SQL geschrieben habe Ich versuche, Daten aus einer CSV-Datei zu lesen und in eine Tabelle in einer Oracle-Datenbank einzufügen.

Normalerweise, wenn ich einfügen Zeitstempel Werte ich die folgende

insert into t (start_time) values 
(TO_TIMESTAMP('12-SEP-12 10.31.19','DD-MON-YY HH.MI.SS')) 

Jetzt bin ich Fehler bekommen, von diesen Linien auf den Stationen, wie unten

f_call_start gezeigt: = to_timestamp (substr (L_LINE, Komma2 + 1, Komma3-Komma2-1), 'DD-MON-YY HH.MI.SS'); Error (38,28): PLS-00306: falsche Anzahl oder Arten von Argumenten in Aufruf von 'SUBSTR'

call_record_processor('calldata'); 

create or replace procedure call_record_processor(file_name_input in varchar2) 
is 
l_file UTL_FILE.file_type; 
l_line varchar2(100); 
l_eof boolean:=false; 
comma1 varchar2(10); 
comma2 varchar2(10); 
comma3 varchar2(10); 
comma4 varchar2(10); 

f_source_no call_usage.source_phone_number%type; 
f_dest_no call_usage.destination_phone_number%type; 
f_call_start call_usage.call_start_time%type; 
f_call_end call_usage.call_end_time%type; 

begin 
l_file:=UTL_FILE.fopen('c:\temp\',file_name_input,'r'); 

loop 
    begin 
    utl_file.get_line(l_file,l_line); 
    dbms_output.put_line(l_line); 
    EXCEPTION 
    when no_data_found then 
    exit; 
    end; 
comma1:=INSTR(l_line,',',1,1); 
comma2:=INSTR(l_line,',',1,2); 
comma3:=INSTR(l_line,',',1,3); 
comma4:=INSTR(l_line,',',1,4); 

f_source_no:=SUBSTR(l_line,1,comma1-1); 
dbms_output.put_line('source_phone_number='||f_source_no); 

f_dest_no:=SUBSTR(l_line,comma1+1,comma2-comma1-1); 
dbms_output.put_line('destination_phone_number='||f_dest_no); 

f_call_start:=to_timestamp(substr(l_line,comma2+1,comma3=comma2-1),'DD-MON-YY HH.MI.SS'); 
dbms_output.put_line('call_start_time='||f_call_start); 

f_call_end:=to_timestamp(substr(l_line,comma3+1,comma4-comma3-1),'DD-MON-YY HH.MI.SS'); 
dbms_output.put_line('call_end_time='||f_call_end); 

insert into call_usage values(f_source_no,f_dest_no,f_call_start,f_call_end); 
end loop; 
utl_file.fclose(l_file); 
COMMIT; 
end call_record_processor; 

Answer 1

Es sollte dbms_output.put_line