berkeley_db_svc: 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/berkeley_db_svc - from package: db4-utils

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

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