How to increase number of open file limit in GUI and VNC console of RHEL?

Solution Verified - Updated -

Issue

  • Facing Resource temporarily unavailable errors while load testing an application, need to increase nofile and
    system wide limits for number of open files in GUI & VNC console?
  • Why CLI and GUI console shows different open file size limit?

Environment

  • Red Hat Enterprise Linux 8
  • GNOME
  • Tigervnc

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