echo $PATH
/home/u01/app/oracle/product/11.2.0/dbhome_1/bin:/usr/sbin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/oracle/.local/bin:/home/oracle/bin

[oracle@db ~]$ crontab -l
SHELL=/bin/bash
PATH=/home/u01/app/oracle/product/11.2.0/dbhome_1/bin:/usr/sbin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/oracle/.local/bin:/home/oracle/bin

59 09 * * * oracle  /bin/bash /home/oracle/backup_script

Dec 28 09:59:01 db crond[1391]: (oracle) RELOAD (/var/spool/cron/oracle)
Dec 28 09:59:01 db CROND[87597]: (oracle) CMD (oracle  /bin/bash /home/oracle/backup_script)
Dec 28 10:00:01 db CROND[87744]: (root) CMD (/usr/lib64/sa/sa1 1 1)
Dec 28 10:00:40 db crontab[87904]: (oracle) LIST (oracle)
Dec 28 10:01:01 db CROND[87974]: (root) CMD (run-parts /etc/cron.hourly)
Dec 28 10:01:01 db run-parts(/etc/cron.hourly)[87974]: starting 0anacron
Dec 28 10:01:01 db run-parts(/etc/cron.hourly)[87983]: finished 0anacron
Dec 28 10:01:01 db run-parts(/etc/cron.hourly)[87974]: starting mcelog.cron
Dec 28 10:01:01 db run-parts(/etc/cron.hourly)[87989]: finished mcelog.cron

[oracle@db ~]$ crontab -l
PATH=$PATH:$HOME/.local/bin:$HOME/bin


19 10 * * *  /home/oracle/backup_script  > /tmp/backup.$$.log 2>&1