sndumpdb: 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 Debian possible default full paths are:

/usr/sbin/sndumpdb - from package: sn

You may install the required package with command apt-get install {package}

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