[Solved] oracle Install Error: Checking monitor: must be configured to display at least 256 colors


Method 1:
Run the following command to install vnc
yum install tigervnc tigervnc-serverv
Method 2:
If you execute ./runInstaller, it still reports an error as

Could not execute auto check for display colors using command /usr/bin/xdpyinfo <<failed

Install xdpyinfo

yum install xdpyinfo

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