mac连接数据库报错，ORA-21561OID generation failed

mac连接数据库报错，ORA-21561: OID generation failed

解决过程：

1. 打开终端,查看hostname

   hostname

   发现hostname是local而不是localhost

2. 查看hosts文件

   cd /etc
   open hosts

   内容为：
   ```bash
   ##

   Host Database

   #

   localhost is used to configure the loopback interface

   when the system is booting. Do not change this entry.

   ##

3. 0.0.1 localhost

4. 255.255.255 broadcasthost
   ::1 localhost

   Added by Docker Desktop

   To allow the same kube context to work on the host and the container:

5. 0.0.1 kubernetes.docker.internal

   End of section

   ```
   hostname和hosts文件中不一致

6. 修改hostname和hosts保持一致

   sudo scutil --set HostName localhost