启动受管服务器出现：unable to get file lock, will retry...
解决方法：
一.删掉Domain下的*.lok文件
1. 删除edit.lok
进入到domain_home下：
cd /u01/Oracle/Middleware/user_projects/domains/idm_domain
将edit.lok文件删掉
rm edit.lok
2.删除config.lok
进入到domain_home/config下：
cd /u01/Oracle/Middleware/user_projects/domains/idm_domain/config/
将config.lok文件删掉
rm config.lok
3.删除AdminServer.lok
cd /u01/Oracle/Middleware/user_projects/domains/idm_domain/servers/AdminServer/tmp
rm AdminServer.lok
4.删除EmbeddedLDAP.lok
/u01/Oracle/Middleware/user_projects/domains/idm_domain/servers/AdminServer/data/ldap/ldapfiles
rm EmbeddedLDAP.lok
二.删掉Domain下的*.DAT文件：
进入到domain_home当中
cd /u01/Oracle/Middleware/user_projects/domains/idm_domain
找到文件被删掉
[oracle@idm idm_domain]$ find servers/ -name "*.DAT"
servers/AdminServer/data/store/diagnostics/WLS_DIAGNOSTICS000000.DAT
servers/AdminServer/data/store/default/_WLS_ADMINSERVER000000.DAT