DOS command "sqlplus /nolog @file" and "sqlplus user / password @file

Question

It's very strange what j've observed:
J've two files *.sql :
-- 1:
file_with_connect.sql which contains 3 lines :
connect <user>/<password>@tnsname
select count(*) from <table_name>;
exit
-- 2:
file_without_connect.sql which contains only:
select count(*) from <table_name>;
exit
table <table_name> isn't empty (it contains 1 row)
-- 1:
When J execute from DOS (on the client):
sqlplus /nolog @file_with_connect.sql le result is 0 rows in table <table_name>
-- 2:
When J execute from DOS :
sqlplus <user>/<password>@tnsname @file_without_connect.sql le result is: 1 row in table <table_name>
I use the same connection, tnsname, table.
Why the result isn't the same ?
There is no error in my alertXXXX.log

Answer 1

Hi Mustafa
The table <table_name> that j've used exists only in one database.
It's tnsname is ok on the server, on the client it was defined 2 times ! (but the same) in the file tnsname.ora. J've modify the client tnsname.ora.
But, j'm not sure it was the reason of our problem: the error isn't regular (sometimes) so j can't verify that it will never appear.
Any other idea?