列出 PowerProtect DD 系統備份檔案的 PPDM 失敗，並顯示錯誤

列出 PowerProtect DD 系統的備份檔案失敗，並顯示「找不到伺服器的使用者名稱。

$ ./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'.

為 Data Domain 主機名稱指定的值不正確。這應該是主機的IP位址，而不是實際的主機名。

1. 使用 Oracle 主機的 ddutil -s 命令顯示 DD 主機名稱。
   範例輸出：

   # /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. 使用 DD IP 位址重新執行 ddutil 命令。
   範例輸出：

   # /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