Unable to open socket file: target process not responding or HotSpot VM not loaded

jinfo -flag SurvivorRatio 18651会报

18651：Unable to open socket file: target process not responding or HotSpot VM not loaded

或者

18651：well-known file is not secure

改下下面调用
sudo -u [user] /usr/local/java/bin/jinfo -flag SurvivorRatio 18651

则结果为

-XX:SurvivorRatio=8

即进程18651的用户并不是root，需要对应用户执行jinfo才行

对于systemctl start xxx启动，上面改动还是会报错！！！