Help me to make this workaround for dbms_output buffer(6502) problem click.

Question

Hi,
what i am trying is to store multiline records into single variable. Say ename||'---'||empno||chr(10) ( chr(10) fro newline) from table emp into variable x. On outputting x o/p should be
dbms_output.put_line(x)
o/p to be :-
scott---7306
smith---7406
continued like that.
dbms_output.put_line( ) has buffer size of 255 so if more records x will not be displayed. value error will be there. for solution what i tried is to substring x again and again and display substring there and then.
Here is my code :-
declare
x varchar2(4000);
y varchar2(100);
y1 varchar2(100);
i number;
j number :=1;
k number;
cursor c is select ename||'----'||empno||chr(10) from emp;
begin
open c;
loop -- for all records to be in multiline manner in a single var
fetch c into y ;
exit when c%notfound;
x:=x||y;
end loop;
close c;
i:=instr(x,chr(10),1,1); -- initialise i with position of first appearance of chr(10)
k:=2; -- i initialise it 2 so as to find second appearance of chr(10) in the loop
loop -- this loop for outputting using substr
y1:=substr(x,j,i); --- getting the first record say smith--7306 like that
-- dbms_output.put_line(i);
dbms_output.put_line(y1);
j:=i+1; --- position from which next string to be extracted
i:=instr(x,chr(10),1,k)-i; -- length of next appearance of chr(10)
k:=k+1; -- incrementing for next chr(10)
exit when(i<=0); -- instr returns 0 when chr(10) not found so exit
end loop;
end;
desired output :-
smith--7234
scott--7321
john--7431
jack--7921
output i am getting is like :-
smith--7234
scott--7321
scott--7321
john--7431
john--7431
jack--7921
Not on expected lines. please help to correct this code.
regards ravi.

Answer 1

Is this not what you want?
SQL>declare
  2     cursor c1 is select ename||'----'||empno details
  3                  from emp;
  4  begin
  5     for r1 in c1 loop
  6        dbms_output.put_line(r1.details);
  7     end loop;
  8  end;
  9  /
KING      ----7839
BLAKE     ----7698
CLARK     ----7782
JONES     ----7566
MARTIN    ----7654
ALLEN     ----7499
TURNER    ----7844
JAMES     ----7900
WARD      ----7521
FORD      ----7902
SMITH     ----7369
SCOTT     ----7788
ADAMS     ----7876
MILLER    ----7934
KING      ----8888
ADAMS     ----9999
PL/SQL procedure successfully completed.
SQL>Why do you need chr(10) again?
Cheers
Sarma.