dbiproxy: 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/dbiproxy - from package: perl-DBI

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

On Debian possible default full paths are:

/usr/bin/dbiproxy - from package: libdbi-perl

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

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