Where do concurrent request log files and output files go, Oracle 12.1 12.2

SELECT LOGFILE_NAME, OUTFILE_NAME ,a.request_date ,a.lfile_size/1024/1024 lfile ,a.ofile_size/1024/1024 ofile
 ,b.user_concurrent_program_name
from fnd_concurrent_requests a ,
fnd_concurrent_programs_vl b
where a.request_date between sysdate -4 and sysdate
and a.concurrent_program_id = b.concurrent_program_id

;

Get Oracle 12 payment XML output, Custom payment template

Get Oracle 12 payment XML output.
Use the following query to get XML Output for payment to modify the payment template:
Q1:-
SELECT   document
  FROM   iby_trxn_documents
 WHERE   payment_instruction_id = :p_payment_instruction_id;

use the output to build custom payment template

Thanks,