Troubleshooting of DBCA errors created in Linux

Article Title: how to solve an error when DBCA is created in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

The environment is linux as 4

The following error occurs when I create a dbca:

Xlib: connection to ": 0.0" refused by server

Xlib: No protocol specified

Java. lang. NoClassDefFoundError

Solution:

Run the following command with the root user:

# Xhost

Then switch to Oracle:

$ Export DISPLAY = localhost: 0.0

$ Dbca

Or run the following command with an Oracle user:

-> Xhost

-> Export DISPLAY = 127.0.0.1: 0.0

-> Dbca