dpm-dbck: 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/dpm-dbck - from package: dpm-contrib-admintools

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

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