JIRA startup failed, JIRA has been locked.

一、故障現象

介面登入時提示：
JIRA Startup Failed
You cannot access JIRA at present. Look at the table below to identify the reasons 

Description 
The jira.home directory '/data/www/jira_home/jiradata' is already locked. Please see the JIRA documentation for more information on locked jira.home directories.
 
後臺啟動：
[oracle@bogon bin]$ ./startup.sh
Detecting JVM PermGen support...
PermGen switch is supported. Setting to 256m
If you encounter issues starting up JIRA Standalone Edition, please see the Troubleshooting guide at
Using CATALINA_BASE:   /home/atlassian-jira-enterprise-4.0.2-standalone
Using CATALINA_HOME:   /home/atlassian-jira-enterprise-4.0.2-standalone
Using CATALINA_TMPDIR: /home/atlassian-jira-enterprise-4.0.2-standalone/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_25
Using CLASSPATH:       /home/atlassian-jira-enterprise-4.0.2-standalone/bin/bootstrap.jar
touch: cannot touch `/home/atlassian-jira-enterprise-4.0.2-standalone/logs/catalina.out': Permission denied

二、故障原因
'/data/www/jira_home' 下有一個 .jira-home.lock檔案，刪除重新啟動就好了。
.jira-home.lock檔案是為了防止在一臺機器上跑多個JIRA站點，並且又設定了同一個jira.home的情況。

三、故障排除
1、查詢.jira-home.lock檔案
[root@bogon ~]# find / -name '.jira-home.lock'
/data/www/jira_home/jiradata/.jira-home.lock

2、關閉jira命令
/data/www/jira/bin/shutdown.sh

【注】/data/www是我的安裝路徑，修改為自己的安裝目錄

3、啟動jira命令
/data/www/jira/bin/startup.sh

故障解決。