Varchar2 issue..

Question

Hi all...
Database: oracle 11g
please help me with this issue.
we are calling a SQL server procedure which returs a string.
The string can be very large
The procedure is working fine on their side,
but if i call that procedure i am not getting any output.
*** anonymous completed with no errors, but not getting the output ***
DECLARE
  v_return VARCHAR2(32000);
BEGIN
  db.test_sql_proc@DB_SQL_LINK (1050 , v_return);
  COMMIT;
  dbms_output.put_line('output '||v_return);
END;Things that we tested..
1) no issues with the db link
2) no issues with the SQL server procedure
3) ***Strange thing that we found in the testing is ,
     They are using VARCHAR(MAX) (SQL SERVER datatype) for the output parameter.
    If in the SQL server procedure, if we change that to varchar(4000),
    everything is working fine.
    If SQL server procedure is using anything more than varchar(4000)
    I am not getting the output
There is limit on Oracle side for varchar2 (4000) in SQL,
but over here it is PL/SQL, not sure why it is taking only 4000 charsPlease help me with this issue.

Answer 1

Try debugging your code and view the v_return using raise_application_error. Just want to make sure nothing wrong with the proc and it returns value
DECLARE
  v_return VARCHAR2(32000);
BEGIN
  db.test_sql_proc@DB_SQL_LINK (1050 , v_return);
  COMMIT;
  RAISE_APPLICATION_ERROR(-20001,'output '||v_return);
END;
{code}