WARNING: Limit of open file descriptors is found to be 1024.

启动OMS提示：

WARNING: Limit of open file descriptors is found to be 1024.
The OMS has been started but it may run out of descriptors under heavy usage.
For proper functioning of OMS, please set "ulimit -n" to be at least 4096.

为open files限制值设置问题，提示参数值需要至少4096，而此时仅有1024。

解决方法

1、临时生效：

ulimit -n 4096

2、修改参数文件

vi etc/security/limits.conf

按i或insert进行编辑一下值

#oracle
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024  --》 4096
oracle hard nofile 65536
oracle soft stack 10240

按ESC退出编辑，再输入 :wq 保存退出

重新登录后生效