Embed SQL in shell script

Question

I'm trying to embed sql statements in shell.
I'm new to this..
Can someone please pass some relevant document links on the web which demonstrates it?
What I'm looking for is:
1) How to pass variables from shell environment to sql
2) How to pass values back to the shell from sql
Example:
Say, I want to run a concurrent request ( inside a shell script) . Then I want to check the status of this concurrent requests from FND_CONCURRENT_REQUESTS
For which I have do a:
#/bin/bash
#Submit the request
CONCSUB APPS/APPS SYSADMIN 'System Administrator' SYSADMIN CONCURRENT FND FNDSCURS >> /tmp/${TWO_TASK}request.log
#Here, I pull out the value of request id from the log #in v_request_no
v_request_no=`cat /tmp/${TWO_TASK}request.log | cut -d" " -f3`
echo "Submitted request No: ${v_request_no}"
Now, I want to check the status of this request, for which I want to embed the sql:
select status_code from FND_CONCURRENT_REQUESTS where request_id=${v_request_id}
How do I embed this?
And later, I want to pass the value of "status_code" back to my shell and do some manipulation.
How do I get the value ( of status_code) back in shell script?
I did a quick hunt on the google to find a relevant doc. No luck yet, so I thought I'll post it here and then go back to some more hunting.
Message was edited by:
itzz.me

Answer 1

Replying to myself instead of editing previous post. Confusing either way, hopefully I picked the less-confusing route.
The second script snippet that I posted would work really well except for one tiny detail: exit codes have to be numeric. The status_code column in FND_CONCURRENT_REQUESTS is certainly not numeric. :-)
Here's something that should work. I even checked it for syntax this time, because, well, it's really ugly. :-) Needless to say, you'll need to modify it slightly to plug into your script, since I hard-coded a requestid for purposes of illustration. Please note that the sqlplus command in the here document is enclosed in backticks, not single quotes:
----begin code snippet---
#!/bin/bash
v_request_id=2415616 #Just an example, sub your own value here
status_code=`sqlplus -s apps/appspass<<EOF | grep Code | cut -f2 -d:
select 'Code:' || status_code
from fnd_concurrent_requests
where request_id = $v_request_id;
exit;
EOF`
echo "Status code is: $status_code"
----end code snippet-------
If you can't pass in the apps password from the environment, and have to hard-code a password into the script (yecccchhh), I'd suggest setting up a read-only user with SELECT privileges on FND_CONCURRENT_REQUESTS, and running sqlplus as the read-only user instead of apps.