Unix script and sqlplus statements

Question

I have a unix file which contains sql statements. Included is the sqlplus statement to log on to the database with the username and password: xxxxx/xxxxxx@sid<<EOF
When I run the unix file from my command line outside of sql, it runs successfully. When I attempt to run the same file in a cron job, I receive the message, sqlplus: not found.
How can I run this unix file in a cron job? Is something else needed?
Thank you,
GD

Answer 1

When I log to unix with the root password and issue:
01 9 23 4 3 su - xx -c ". /home/xx/.profile;/home/xx/test.sh"
The test.sh script executes successfully.
When I log on with my userid and put the line in a crontab, I receive the following:
Your "cron" job on yyy1
su - xx -c ". /home/xx/.profile;/home/xx/test.sh"
produced the following output:
su: Sorry
If cron is run by ROOT, shouldn't I get the same results?
GD