dms_dumpdb: 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/dms_dumpdb - from package: dms-core

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

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