ORA-06502 PL/SQL Error

Question

Hi All
Currently I am working on .net based application and Oracle 8.0.6.00 (Multi language Support - (Japanese/English ))as backbend .
The above mention error is occurring from last few days on our production server when user is trying to save data .
I have already gone through all packages and procedure used in my application .
but i didn't find any conversion error .
Main Problem is that some time data is save properly even if error is occurred and some time it not saving data in to the DB. and the same error we are trying to reproduce on development server but it is not reproducing ...
I also checked all NLS Setting of my DB .but still in vague about this error
Can some help me......
Thanks & Regards
Shrirang
Message was edited by:
user528219

Answer 1

As you said
Main Problem is that some time data is save properly even if error is occurred
and some time it not saving data in to the DB. and the same error we are trying to
reproduce on development server but it is not reproducing ...
I also checked all NLS Setting of my DB .but still in vague about this error
Can some help me......
Hi Khurram ,
Thanks for reply
the problem is not related any perticular code its big package which we call
to load , modify and save data . i have checked all code . my filed size is 4 time
more then specified size by user for a perticular field.
can you plz. suggest me any other way to solve this
SQL> CREATE OR REPLACE PACKAGE error_06502 AS
  2  FUNCTION  a RETURN VARCHAR2;
  3  END error_06502;
  4  .
SQL> /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY error_06502 AS
  2    v1   NUMBER:='A';<----------------Damn it is an headache
  3    FUNCTION a RETURN VARCHAR2 AS
  4      BEGIN
  5       RETURN 'No Error';
  6    END a;
  7    BEGIN
  8      DBMS_OUTPUT.PUT_LINE ('Error is going to trapped for assigining variable v1..');
  9      EXCEPTION WHEN OTHERS THEN
10      DBMS_OUTPUT.PUT_LINE ('Now error is handled..');
11  END error_06502;
12  .
SQL> /
Package body created.
First time
SQL> EXEC DBMS_OUTPUT.PUT_LINE(error_06502.a);
BEGIN DBMS_OUTPUT.PUT_LINE(error_06502.a); END;
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: character to number conversion error
ORA-06512: at "SCOTT.ERROR_06502", line 2
ORA-06512: at line 1
Now see here
SQL> EXEC DBMS_OUTPUT.PUT_LINE(error_06502.a);
No Error
PL/SQL procedure successfully completed.See why error showed at first glance but not at second time why??
First Time
Whenever you execute the package first time it initiliased once for each
session,when i run this package first time package initialisation going to first time
and the assignment makes in variable v first time and raise the error though i
have exception block in my executable section which is responsible only to handle
errors that is raised in excutable section.
Second Time
Though package intitliasation is failed at first time (intiliasation dont occur properly
first time) ,Oracle marks the package is initialised and will run continously without
any error and return the string 'No Error' within the lenght of yours session when
you will drop yours session and again try to run the package it will raise the same
error first time
SQL> DISCONNECT
Disconnected from Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production
SQL> CONN scott/tiger
Connected.
SQL> EXEC DBMS_OUTPUT.PUT_LINE(error_06502.a);
BEGIN DBMS_OUTPUT.PUT_LINE(error_06502.a); END;
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: character to number conversion error
ORA-06512: at "SCOTT.ERROR_06502", line 2
ORA-06512: at line 1.
SQL> SET SERVEROUTPUT ON
SQL> EXEC DBMS_OUTPUT.PUT_LINE(error_06502.a);
No Error
PL/SQL procedure successfully completed.Check your package variable assignment and error handling exception
properly,you had better to make assignment default value in the executable
section rather in the declaration section.In declartion section just declare the
variable but alls assignment should goes at executable section with definging the
exception which will handle the error nicely.
SQL> CREATE OR REPLACE PACKAGE BODY error_06502 AS
  2      v1   NUMBER;
  3    FUNCTION a RETURN VARCHAR2 AS
  4      BEGIN
  5       RETURN 'No Error';
  6    END a;
  7    BEGIN
  8       DBMS_OUTPUT.PUT_LINE ('Error is going to trapped for assigining variable v1..');
  9       v1:='A';
10      EXCEPTION WHEN OTHERS THEN
11      DBMS_OUTPUT.PUT_LINE ('Now error is handled..');
12  END error_06502;
13  .
SQL> /
Package body created.
SQL> EXEC DBMS_OUTPUT.PUT_LINE(error_06502.a);
Error is going to trapped for assigining variable v1..
Now error is handled..
No Error
PL/SQL procedure successfully completed.----------------------------------------------------------------------------------------------------------------
In my last post there would be another reason for this error i would code it here again..
May be the column you are storing the sequence in is defined as NUMBER2(6) to VARCHAR2(2). Some time ORACLE implicitly convert it if you have valid data in varchar2(2) column like 1,2,3 but if 1A,2A
e.g
SQL> DECLARE
  2  a   NUMBER(6);
  3  BEGIN
  4  a:='1';
  5  END;
  6  .
SQL> /
PL/SQL procedure successfully completed.
SQL> DECLARE
  2  a   NUMBER(6);
  3  BEGIN
  4  a:='1a';
  5  END;
  6  .
SQL> /
DECLARE
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: character to number conversion error
ORA-06512: at line 4If none of these reason which i had mentioned please let us know to share yours
workaround.
Khurram