Run below command in sql to get a script. Spool it to a file.

select 'copy datafile '||file_id||' to '||'''/app/oracle/TEST/'||substr(file_name,21,instr(file_name,'.')-21)||'_01.dbf'''||';' from dba_data_files order by 1;

Shut immediate;

startup mount;

rman target /

Run the spooled file.

zip backup files.

backup controlfile to trace(create control file script)

transfer files to apps2

create pfile for new instance.

startup nomount

create controlfile

startup db