Why am i getting PLS-00306 here ??

Question

Hi,
I am on Oracle 10.1 on Solaris.
I am running a very simple code,
set serveroutput on size 1000000
begin
for i in ( select index_name from user_indexes where table_name='BALANCES' )
loop
dbms_output.put_line ( i ) ;
end loop ;
end ;
Why should I get error,
dbms_output.put_line( i ) ;
ERROR at line 4:
ORA-06550: line 4, column 6:
PLS-00306: wrong number or types of arguments in call to 'PUT_LINE'
ORA-06550: line 4, column 6:
PL/SQL: Statement ignored
For that matter, instead of dbms_output.put_line, if we put anything that expacts a varchar2 value, its giving the error. Does my cursor not return a verchar2 ?
Please convey.
Thanks and Regards

Answer 1

hey
u need use like this
begin
for i in ( select index_name from user_indexes where table_name='BALANCES' )
loop
dbms_output.put_line( i.index_name ) ;
end loop ;
end ;
since i variable is not of number or character type
its a binary_integer
i won't have any meaning here so use i.index_name
if u want to know the count then better use a variable say
counter
counter:=0
for i in (....)
loop
dbms_output.put_line(counter);
end loop
end;