Oracle PL/SQL: how to get the stack trace, package name and procedure name

Question

Sometimes the exception returns something like: \"ORA-06502: PL/SQL: numeric or value error: character string buffer too small\".

It\'s not so readable since it does

Answer 1

I use the combination of DBMS_UTILITY.FORMAT_ERROR_STACK and DBMS_UTILITY.FORMAT_ERROR_BACKTRACE. (Improving the answer of Justin Cave)

when others then
  Dbms_Output.put_line ( DBMS_UTILITY.FORMAT_ERROR_STACK() );
  Dbms_Output.put_line ( DBMS_UTILITY.FORMAT_ERROR_BACKTRACE() );

This gives the error on the first line and the stack on the following lines: (output from the example given by Justin Cave)

ORA-20001: Error 1
ORA-06512: at "SCOTT.X1", line 4
ORA-06512: at "SCOTT.X2", line 5
ORA-06512: at line 2

Answer 2

Or try DBMS_UTILITY.FORMAT_CALL_STACK

Answer 3

You probably want DBMS_UTILITY.FORMAT_ERROR_BACKTRACE function

SQL> ed
Wrote file afiedt.buf

  1  create or replace procedure p1
  2  is
  3  begin
  4    raise_application_error( -20001, 'Error 1', true );
  5* end;
SQL> /

Procedure created.

SQL> create or replace procedure p2
  2  as
  3  begin
  4    null;
  5    p1;
  6  end;
  7  /

Procedure created.

SQL> begin
  2    p2;
  3  exception
  4    when others then
  5      dbms_output.put_line( dbms_utility.format_error_backtrace );
  6  end;
  7  /
ORA-06512: at "SCOTT.P1", line 4
ORA-06512: at "SCOTT.P2", line 5
ORA-06512: at
line 2


PL/SQL procedure successfully completed.

Answer 4

Or you could use DBMS_DEBUG.PRINT_BACKTRACE