How To Fix PO397 - Device cache reset as a long host name changed

PO397 - Overview

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 397

• Message text: Device cache reset as a long host name changed

What causes this issue?

You have maintained a long host name for a destination host in
transaction SPAD. This change is activated for all devices that use
this destination host.

System Response

All devices that use this destination host must be updated in the cache
in order to take the new assignment into account.

How to fix this error?

No action necessary.

Procedure for System Administrators

A message is automatically sent to every application server to tell
them to reset the device cache.

Error message extract from SAP system. Copyright SAP SE.

PO397 - Details

• The SAP error message "PO397 Device cache reset as a long host name changed" typically occurs in the context of SAP printing and device management. This error indicates that the device cache has been reset due to a change in the hostname of the server or system where the SAP application is running. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Hostname Change: The error is triggered when the hostname of the SAP application server changes, and the system detects that the device cache (which stores printer and device configurations) is no longer valid.
  Network Configuration Changes: Changes in network settings, such as DNS updates or changes in the server's IP address, can also lead to this error.
  Long Hostname: The term "long hostname" suggests that the new hostname exceeds the character limit or is not recognized properly by the SAP system.
  
  
  Solution:
  
  
  Reset Device Cache:
  
  You can manually reset the device cache