opennms 服务无法启动

Question

按照opennms官方安装指导文件，前面都没有报什么错误，都是成功的，但是最后启动opennms服务时，系统无法启动该服务，按提示输入“systemctl status opennms.service -l”查看信息，有以下内容：

[root@localhost ~]# systemctl status opennms.service -l
● opennms.service - OpenNMS server
   Loaded: loaded (/usr/lib/systemd/system/opennms.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Fri 2016-01-15 10:51:44 CST; 1min 24s ago
  Process: 3987 ExecStart=/opt/opennms/bin/opennms -Q start (code=exited, status=1/FAILURE)


Jan 15 10:51:44 localhost.localdomain opennms[3987]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
Jan 15 10:51:44 localhost.localdomain opennms[3987]: at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:814)
Jan 15 10:51:44 localhost.localdomain opennms[3987]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
Jan 15 10:51:44 localhost.localdomain opennms[3987]: ... 8 more
Jan 15 10:51:44 localhost.localdomain opennms[3987]: Unknown value return from doStatus: 1
Jan 15 10:51:44 localhost.localdomain opennms[3987]: [FAILED]
Jan 15 10:51:44 localhost.localdomain systemd[1]: opennms.service: control process exited, code=exited status=1
Jan 15 10:51:44 localhost.localdomain systemd[1]: Failed to start OpenNMS server.
Jan 15 10:51:44 localhost.localdomain systemd[1]: Unit opennms.service entered failed state.
Jan 15 10:51:44 localhost.localdomain systemd[1]: opennms.service failed.
[root@localhost ~]#

不懂了，请指教，谢谢！

Answer 1

引用来自“Blue-Wind”的评论

已经解决，是因为没有安装
Oracle Java 8
 environment，只安装了open jdk。

Answer 2

已经解决，是因为没有安装
Oracle Java 8
 environment，只安装了open jdk。