oracle database migration RMAN based on the different machines

First, before preparing the database migration

1. Check Database Version
   

   su - oracle
   [oracle@host ~] $sqlplus / as sysdba
   SQL > select * from v$version
   

2. OS View information

   SQL > select  dbms_utility.prot_string from dual;
   

3. View user database information

   SQL > select * from dba_users;
   

4. View database instance information

   SQL > select instance_name ,status from v$instance;
   

5. Information query the database DBID

   SQL > select dbid from v$instance;
   

6. Query archive path

   SQL > archive log list; 
   

7. Query the database log file path

   SQL > select name from v$controlfile;
   

8. Query parameter file path

   SQL > show parameter pfile;
   

Second, incremental backup