Question

I am using Oracle 10g.
My Scenario:

I am getting some more than 4000 records in a comma separated string(‘ord0000,ord0001,ord0002,……’) as a parameter. I need to compare these values against a table1 and find out the matching recordset.

For that purpose I created a function as below:

function get_split_values (

csv_string varchar2
) return split_table pipelined
as
Delimit_String varchar2(32767) := csv_string;
Delimit_index integer;
begin
loop
Delimit_index := instr(delimit_string,',');
if Delimit_index > 0 then
pipe row(substr(delimit_string,1,delimit_index-1));
delimit_string := substr(delimit_string,delimit_index+1);
else
pipe row(delimit_string);
exit;
end if;
end loop;
return;
end get_split_values;

Now when I used this function to join with my table1 in a procedure as below:

create procedure abc (parameter_csv varchar2,...)
as
begin
open cursor for
select t.col1 from table1 t join table(get_split_values(parameter_csv)) x
on x.column_value = t.col1;
...
end abc;

It works fine when the parameter_csv have some around 300 or 400 IDs like(‘ord0000,ord0001,ord0002,……’) but when it contains more that records I got the error
“ORA 01460 : unimplemented or unreasonable conversion requested.”

I don’t understand what raise this error. Any ideas?
OR is there any best way to accomplish this task.

Answer 1

Initially I thought you were overflowing your varchar2(32767) but a quick look at your sample IDs indicates that you shouldn’t be maxing out that early(400 ids).

A quick google of the error led me to this forum in OTN: http://forums.oracle.com/forums/thread.jspa?threadID=507725&start=15&tstart=0

And to this blog post: http://oraclequirks.blogspot.com/2008/10/ora-01460-unimplemented-or-unreasonable.html

which indicates that this might be an oracle bug