hsqldb-databasemanagerswing: 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/bin/hsqldb-databasemanagerswing - from package: hsqldb-utils

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

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