Weird sqlplus output error

Question

I have a user here experiencing some bizarre behavior w/ sqlplus.
If she logs into database ABDC as user X and executes any script that utilizes dbms_output, she gets the following printed out repeatedly:
SQL> set serveroutput on
SQL> spool gradeload
SQL> exec dummy_package.dummy;
before v-user
before v-user
before v-user
before v-user
before v-user
before v-user
etc....
If I log into the same database, as the same user, from my own computer, or toad, or a terminal window, then I do NOT experience the same behavior.
Seems to me like some sort of variable stored to her sqlplus exe, but I don't really know how that works. Anybody know what's causing this and/or how I can get rid of it?

Answer 1

Dear Abdujaparov!
SQL*Plus writes it's output through stdout. Even ORA-XXXX errormessages are written through stdout. The stderr channel is only used if SQL*Plus is suffering an error and terminates abnormaly so you won't get ORA-XXX errormessages into your error file with 2>>.
I think that's not the answer you wanted to hear but I hope that it could be of any help to you.
Yours sincerely
Florian W.