How to clear the DNS resolver caches on DNS server manually?

Solution Verified - Updated -

Issue

  • Is it possible to clear DNS caches manually without restarting named service on DNS server?

Environment

  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 4
  • bind

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