Sqlplus command not found when running from crontab - linux

Question

This is the case, I made 3 files to execute backup database command in rman
test.sh:
#!/bin/bash
sqlplus /nolog #/u01/conectar.sql
conectar.sql:
connect sys/manager as sysdba
ho rman target mydatabase/mypassword #/u01/backup.sh
backup.sh:
#!/bin/bash
RUN {backup database;}
and then I did all the chmod u+x for the files to make them executable, then export EDITOR=nano to change the cron editor.
when I go to crontab -e i put
00 15 * * * /u01/test.sh
If I clic this test.sh manually, the operation runs normally, but then in the crontab I get the "you got a mail" thing with this message
From root#localhost.localdomain Thu Dec 22 16:20:01 2016
Return-Path:
X-Original-To: oracle
Delivered-To: oracle#localhost.localdomain
Received: by localhost.localdomain (Postfix, from userid 500)
id 956CD41D4B; Thu, 22 Dec 2016 16:20:01 -0400 (AST)
From: root#localhost.localdomain (Cron Daemon)
To: oracle#localhost.localdomain
Subject: Cron /u01/test.sh
Content-Type: text/plain; charset=UTF-8
Auto-Submitted: auto-generated
X-Cron-Env:
X-Cron-Env:
X-Cron-Env:
X-Cron-Env:
X-Cron-Env:
Message-Id: <20161222202001.956CD41D4B#localhost.localdomain>
Date: Thu, 22 Dec 2016 16:20:01 -0400 (AST)
/u01/test.sh: line 3: sqlplus: command not found"
Please can you remake the script or the crontab for me? If you can answer with the exactly modifications I would appreciate it, I'm not an expert in this environment so a general knowledge needed answer will leave me the same, thanks.

Answer 1

You can do it in many ways:
Just before the cron line:
PATH=$PATH:/full/path/to/oracle/bin
Or on the cron line itself:
00 15 * * * PATH=$PATH:/full/path/to/oracle/bin /u01/test.sh
Let your script test.sh source another shared script that sets up your Oracle environment:
source /path/to/oracle_env.sh
I prefer the third method because it is very flexible and it helps us keep the crontab uncluttered. .bash_profile should be meant for interactive shell only - it is not good to share it with scheduled scripts, especially in production.