1. Check the archive path of the DB (Query using V$PARAMETER view table)

SQL> 
SELECT NAME, VALUE FROM V$PARAMETERS WHERE NAME = 'LOG_ARCHIVE_DEST';

NAME
----------------------------------------------------------------
VALUE
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
LOG_ARCHIVE_DEST
/data/tibero_data7/archive/

2. Create arch_del.sh file that selects and deletes all files named *.arc older than a specific time

-- Example shell file to automatically delete archive files older than 7 days

$ cat arch_del.sh
find /data/tibero_data7/archive/ -name "*.arc" -mtime +7 -exec rm -f {} \;

3. Register the shell file in crontab

It is recommended to set crontab as the root account rather than a general user account. 

# crontab -e (run from root directory)

-- To apply crontab deletion schedule every minute
* * * * * sh <absolute path of arch_del.sh file>/arch_del.sh >> <absolute path of arch_del.sh file>/arch_del.log 2>&1

crontab Information