Can i know what is the sql host at here?I needed it for hosting my server (Ragnarok Online)
And also the IP ....

Have a look in your Zymic Hosting Control Panel. It will have the information in there.

Jacob.

Then i occur a 502 proxy error

Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /.

Reason: Error reading from remote server

Disk space
5000MB
The total amount of web space per account
Data transfer (Monthly)
50000MB
Amount of bandwidth transfer per month
Control Panel
ZHCP
Zymic Hosting Control Panel for easy management
Number of Accounts
Unlimited
You can host as many websites with us as you like!
FTP Access
Yes
Upload, rename and edit your website files with ease
Advertisements
No
We do not put any kind of advertisements on your website

Free Web Hosting - PHP and Databases

PHP
Ver 5.1.6
We support the latest version of PHP
MySQL Databases
5
We accept a total of 5 MySQL database accounts
PHPMyAdmin
Ver 2.8.2
Advanced MySQL database management.

Free Web Hosting - Domain Names

Sub-Domains
Yes
A range of choices such as 99k.org, zxq.net, zymichost.com
TLD Domain
Yes
You can use your own domain on our hosting
Free TLD Domain
Yes
Win a free domain (e.g. site.com)

Free Web Hosting - Zymic Hosting Control Panel (ZHCP) Features

File Manager
Yes
Upload, edit, rename, and delete files instead of using FTP
Statistics
Webalizer
Advanced statistics to show how many visitors you get
Cash Prizes
Yes
The top 3 most popular websites every month win a cash prize!
MySQL Management
Yes
Web based MySQL management or simply use PHPMyAdmin
Free Support
Yes
We provide free community based support
Account Settings
Yes
Change various settings including E-Mail, password, etc

By the way i wan to ask what is the host ip?
I needed it for hosting my server ^^