PPDM listando arquivos de backup do sistema PowerProtect DD falha com erro

A listagem de arquivos de backup do sistema PowerProtect DD falha com "Failed to find username for server.

$ ./ddutil -f -z DD_hostname:/<storage unit>
Unable to look up username for 'DD_hostname' under '/home/oracle/opt/dpsapps/rmanagent' using fnv1 hash key 
Error: rman_get_user_info_fnv_key: Failed to find username for server DD_host in lockbox /home/oracle/opt/dpsapps/rmanagent/config/ddboost.config, error 
The requested Lockbox entry could not be found.. and fallback check. Error: rman_get_user_info_dd_key: 
Failed to find username for server DD_hostname in lockbox /home/oracle/opt/dpsapps/rmanagent/config/ddboost.config, error The requested Lockbox entry could not be found..
Unable to look up the username for 'DD_hostname'. Reason: rman_get_user_info_dd_key: 
Failed to find username for server DD_hostname in lockbox /home/oracle/opt/dpsapps/rmanagent/config/ddboost.config, error The requested Lockbox entry could not be found..
Checking if lockbox is present under '/u01/app/oracle/product/19.0.0/db_1' from pre-4.0 installation.
Lockbox is not found from pre-4.0 installation.
Unable to look up the username for 'DD_hostname' under '/u01/app/oracle/product/19.0.0/db_1'.

Valor incorreto especificado para o nome de host do Data Domain. Esse deve ser o endereço IP do host e não o nome do host real.

1. Exiba o nome do host do DD usando o comando ddutil -s do host Oracle.
   Exemplo de resultado:

   # /home/oracle/opt/dpsapps/rmanagent/bin/ddutil -s
   
   PowerProtect DD hostname: 192.168.9.107
   
   	FC service name: None
   	FC service enabled: false
   	
   	Storage Unit: oracle-ppdm-111a1
   	Top Level Path: PLCTLP-3cbbb3333-55aa-4e11-bvcx-2222l55t99b
   	Protection Policy Name: oracle
   ...
   ...
   ...

2. Execute novamente o comando ddutil usando o endereço IP do DD.
   Exemplo de resultado:

   # /home/oracle/opt/dpsapps/rmanagent/bin/ddutil -f -z 192.168.9.107:/oracle-ppdm-111a1
   
   Type	Perm		Size		Time		Path
   --------------------------------------------------
   dir		777			160		Tue Jul 23 12:22:06 2024 (1721751726)	/oracle-ppdm-111a1/PLCTLP-3cbbb3333-55aa-4e11-bvcx-2222l55t99b