Shell Programming and Scripting

Hi

I use the following command to check if my_base is active or not :
active_db=`${LOCAL_BIN}/ssh -l ${my_user} ${my_service} "ps -ef | grep ora_smon | grep ${my_base} | sed -e \"s/ */ /g\" | cut -d'?' -f2 | cut -d' ' -f3 | cut -d'_' -f3"`

When I use a file listing databases to check them by a loop, it doesn't work :
(file contains one database per line)

cat $my_file | while read line
do
(...)

active_db=`${LOCAL_BIN}/ssh -l ${my_user} ${my_service} "ps -ef | grep ora_smon | grep ${line} | sed -e \"s/ */ /g\" | cut -d'?' -f2 | cut -d' ' -f3 | cut -d'_' -f3"`

(...)
done

"it doesn't work" simply means the firt line is processed but the loop finish after it.

Thx for your lights in advance.
Rgds.

nobody have idea......?