schema-reload: 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/schema-reload - from package: 389-ds-base

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

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