Error Messages in SQLPLUS

Question

We are having Oracle 9i (9.2.0.5) which handles a whole bunch of applications.
Suddenly the server has started giving out the entire error stack.eg:
in sqlplus
SQL> select e from emp;
will give out
ORA-00604: error occurred at recursive SQL level 1
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at line 8
ORA-00904: "E": invalid identifier
instead of just
ORA-00904: "E": invalid identifier
This is happening at a global level(ie: all users are getting this), can someone tell me which init.ora parameter/sqlnet parameter is making this happen.
DK

Answer 1

One of your triggers on EMP table has in invalid stateNote that the error is on running the SELECT statement (Not a Insert/Update/Delete).
Try using disable all triggers on this tableExtended Error stack is NOT coming because of a invalid trigger on emp table.
SQL> create or replace trigger trig_emp
  2  before insert or update
  3  on emp
  4  for each row
  5  begin
  6    raise program_error ;
  7    err ;
  8  end ;
  9  /
Warning: Trigger created with compilation errors.
SQL> show errors
Errors for TRIGGER TRIG_EMP:
LINE/COL ERROR
3/3      PL/SQL: Statement ignored
3/3      PLS-00201: identifier 'ERR' must be declared
SQL>
SQL> select status from user_objects where object_name = 'TRIG_EMP' ;
STATUS
INVALID
1 row selected.
SQL>
SQL> select e from emp ;
select e from emp
ERROR at line 1:
ORA-00904: "E": invalid identifier
SQL>