dbcolcreate: 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/dbcolcreate - from package: perl-Fsdb

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

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