Hi.
I have got hudge problem.
Every time when i restart my WildFly service, installation process of JForum is run.
I want to install JForum once, because every time I have to repeat installation process i lose my data in Database.\
please help.

Some more information is in this discussion elsewhere: http://www.coderanch.com/t/656841/jforum/JForum-install-database

In short, currently JForum does not support war deployment method.
You have to explode the jforum.war file into jforum directory.

JForum will check for installed=true existing in jforum-custom.conf properties file or not when you access the /index.jsp. If JForum cannot find installed=true, it will redirect URL to /install.jsp.

If you don't want this feature, you can modify the index.jsp by removing or commenting out the following lines:
[code=java;first-line:7] if (cfg == null || !(new File(cfg).exists()) || !SystemGlobals.getBoolValue(ConfigKeys.INSTALLED)) {
redirect = "install.jsp";
}[/code]

Re-package the jforum.war and deploy it again, then manually access the /install.jsp URL at the first time.

Thanks for reply.

If you don't want this feature, you can modify the index.jsp by removing or commenting out the following lines

I did it, and after deployment I have got an error 500.

Odd thing.
I don't have jforum-custom.conf file ...

The jforum-custom.conf file is generated after you have finished JForum web-based installation.
You can find it under <jforum_installed_dir>/WEB-INF/config directory.
The content looks like the following:

#Installation specific configuration options

#Thu Jul 09 02:39:41 CST 2015

announcement=

avatar.maxHeight=130

avatar.maxWidth=130

avatarMaxKbSize=25

captcha.registration=true

container.app=Apache Tomcat

container.version=8

context.path=/jforum

dao.driver=net.jforum.dao.mysql.MysqlDataAccessDriver

database.connection.dbname=jforum

database.connection.driver=com.mysql.jdbc.Driver

database.connection.host=localhost

database.connection.implementation=net.jforum.PooledConnection

database.connection.password=root

database.connection.pool.max=50

database.connection.pool.min=5

database.connection.pool.timeout=5000

database.connection.port=3306

database.connection.string=jdbc\:mysql\://${database.connection.host}\:${database.connection.port}/${database.connection.dbname}?user\=${database.connection.username}&password\=${database.connection.password}&autoReconnect\=true${mysql.unicode}${mysql.encoding}&useNewIO\=false&zeroDateTimeBehavior\=convertToNull&useServerPrepStmts\=false&dumpQueriesOnException\=true&jdbcCompliantTruncation\=false

database.connection.username=root

database.driver.name=mysql

database.support.autokeys=true

database.support.subqueries=true

dateTime.format=yyyy/MM/dd HH\:mm\:ss

dateTime.local=true

dbencoding=utf-8

encoding=UTF-8

forum.link=http\://localhost\:8080/jforum/

forum.name=My Forum

forum.page.metatag.description=here goes the board description

forum.page.metatag.keywords=some keywords for your board

forum.page.title=My Forum - your board description

homepage.link=http\://localhost\:8080

hot.topic.begin=20

html.tags.welcome=a, img, font, b, i, u, li, ul, br, hr, p

i18n.board.default=zh_TW

installed=true

mail.activationKey.messageFile=mail/zh_TW/activateAccount.txt

mail.activationKey.subject=[My Forum] Activate forum account

mail.charset=UTF-8

mail.lostPassword.messageFile=mail/zh_TW/lostPassword.txt

mail.lostPassword.subject=[My Forum] Password recovery

mail.messageFormat=html

mail.newAnswer.messageFile=mail/zh_TW/mailNewReply.txt

mail.newAnswer.subject=[My Forum] Message posted\: {0}

mail.newPm.messageFile=mail/zh_TW/newPrivateMessage.txt

mail.newPm.subject=[My Forum] Private Message

mail.notify.answers=false

mail.sender=email@sender.address

mail.smtp.auth=true

mail.smtp.host=localhost

mail.smtp.password=smtppassword

mail.smtp.port=25

mail.smtp.ssl=false

mail.smtp.username=your@smtp.username

mail.user.email.auth=false

mysql.encoding=

mysql.unicode=

org.quartz.context.mailintegration.cron.expression=0 0/30 * ? * *

org.quartz.context.summary.cron.expression=0 30 12 ? * MON

org.quartz.scheduler.instanceId=AUTO

org.quartz.scheduler.instanceName=JForumScheduler

org.quartz.scheduler.threadName=JForumSchedulerThread

org.quartz.threadPool.class=org.quartz.simpl.SimpleThreadPool

org.quartz.threadPool.threadCount=2

org.quartz.threadPool.threadPriority=3

posts.cache.enabled=true

posts.cache.size=100

posts.edit.after.reply=true

posts.new.delay=15000

postsPerPage=15

registration.enabled=true

rss.enabled=true

server.info=Apache Tomcat/8.0.23

servlet.version=3.1

show.ip=true

show.online.status=true

social.enabled=true

topic.hottest=50

topic.recent=50

topicsPerPage=15

user.hash.sequence=82b17028644414f05588f471455ad51b

usersPerPage=30

You can also re-package jforum.war with your jforum-custom.conf containing the correct database connection and other system settings.