omniidlrun.py: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/omniidlrun.py - from package: omniORB-devel

You may install the required package with command yum install {package}

Error in other languages:
omniidlrun.py: bevel nie gevind nie
omniidlrun.py: comandă negăsită
omniidlrun.py: comando não encontrado
omniidlrun.py: commande introuvable
omniidlrun.py: command not found
omniidlrun.py: käsku ei ole
omniidlrun.py: không tìm thấy lệnh
omniidlrun.py: komanda nerasta
omniidlrun.py: Kommando nicht gefunden.
omniidlrun.py: kommandot finns inte
omniidlrun.py: komut yok
omniidlrun.py: nie znaleziono polecenia
omniidlrun.py: níor aimsíodh an t-ordú
omniidlrun.py: no se encontró la orden
omniidlrun.py: no s'ha trobat l'ordre
omniidlrun.py: opdracht niet gevonden
omniidlrun.py: parancs nem található
omniidlrun.py: perintah tidak ditemukan
omniidlrun.py: príkaz nenájdený
omniidlrun.py: příkaz nenalezen
omniidlrun.py: команда не найдена
omniidlrun.py: командата не е открита
omniidlrun.py: 命令找不到
omniidlrun.py: コマンドが見つかりません