Tips and Tricks site for advanced HP-UX Engineers

01 Dec 22 HP-UX system runs out of tty devices. To many sessions

  1. logins will hang, looking for a tty device
  2. kctune | grep npty
  3. kctune | grep nstrpty
  4. <removed>
  5. “PTY allocation request failed on channel 0” should be on the hang screen
  6. kctune npty=240 ; kctune nstrpty=240 

    A reboot will be required to implement the change.

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