Passing params from SQL file to Shell Script and then from Shell to SQL Fil

Question

Afternoon guys,
Have a fun question for all you gurus in shell scripting out there. I have a shell script that is calling 2
different SQL programs. My objective is to pass a variable called request_number from one sql program
to the shell script and then from the shell script back to another SQL program. I will explain why I
need this to happen.
Here is what the shell script looks like which calls sql programs student_load_a.sql and
student_load_b.sql. Student_load_a.sql basically creates the control file (.ctl) which is needed for the
SQL*Loader and then student_load_b.sql reads the table that was just loaded and does the main
processing. My main objective here is to be passing the request_number which is being generated
using an Oracle Sequence in student_load_a.sql and using this generated number in my main
processing in student_load_b.sql to select records from the table based on request_number.
Any ideas ?Any help or recommendations is welcome and appreciated.
*1. Shell Script*
# Accept system input parameters
p_user_id=$1
p_job_id=$2
# Create control files for sqlload
sqlplus.exe -s $p_user_id @$STUDENT_PATH/student_load_a.sql $p_job_id
exit_status=$?
# Do sqlloads
sdesqlldr.exe userid=$p_user_id control=student_load-$p_job_id.ctl \
                                             log=student_load-$p_job_id.log \
                                             bad=student_load-$p_job_id.bad
exit_status=$?
# Main processing
# sqlplus.exe -s $p_user_id @$STUDENT_PATH/student_load_b.sql $p_user_id $p_job_id $p_request_number
sqlplus.exe -s $p_user_id @$STUDENT_PATH/student_load_b.sql $p_user_id $p_job_id
exit_status=$?
exit 0*2. student_load_a.sql (Would like to pass back the Sequence Number back to shell script and then use in student_load_b.sql*
-- Accept system input parameters
define p_job_id = &1
spool student_load-$p_job_id.ctl
select
'append into table TMP_STUDENT_LOAD
FIELDS TERMINATED BY '','' optionally enclosed by ''"''
trailing nullcols
(request_number CONSTANT ' || '''' || request_number_seq.nextval || ''',
student_id)'
from   dual
spool off;
exit 0;
{code}
*3. student_load_b.sql (This is a big file so I am only adding code that is relevant for the SQL)*
{code}
declare
  v_request_number    number(6);
  v_student_id                  number(7);
  cursor cur_student_load is
    select  student_id
    from   TMP_STUDENT_LOAD
    where  request_number = v_request_number
    order by 1;
begin
    v_user_id := '&1';
    v_job_id := &2;
    -- This is the variable I would like to be be passing from shell script to student_load_b.sql
    -- v_request_number = '&3';
     open  cur_student_load;
     fetch cur_student_load into v_student_id;
      exit when cur_student_load%notfound;
      .... more logic of if then else in here
     close cur_student_load;
end;
{code}
Edited by: RDonASnowyDay on Jan 29, 2010 4:03 PM                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

How come you are mixing WinDoze script (*.exe) with Unix?
You are aware that you will be passing the password along with the user id to the second sql script?
I will assume Unix ksh:
# Accept system input parameters
p_user_id=$1
p_job_id=$2
# Create control files for sqlload
p_seqno=`sqlplus -s $p_user_id @$STUDENT_PATH/student_load_a.sql $p_job_id`
exit_status=$?
# Do sqlloads
sqlldr userid=$p_user_id control=student_load-$p_job_id.ctl \
       log=student_load-$p_job_id.log \
       bad=student_load-$p_job_id.bad
exit_status=$?
# Main processing
# sqlplus -s $p_user_id @$STUDENT_PATH/student_load_b.sql $p_user_id $p_job_id $p_request_number
sqlplus -s $p_user_id @$STUDENT_PATH/student_load_b.sql \
           $p_user_id $p_job_id $p_seqno
exit_status=$?
exit 0And the first sql script would look like this:
-- student_load_a.sql
-- Accept system input parameters
set echo off pages 0 feed off lin 80 trims on ver off
def p_job_id = &1
col seqno NEW_VALUE seqno
select request_number_seq.nextval seqno from dual;
set term off
spool student_load-$p_job_id.ctl
select
'append into table TMP_STUDENT_LOAD
FIELDS TERMINATED BY '','' optionally enclosed by ''"''
trailing nullcols
(request_number CONSTANT ''&&seqno'',
student_id)'
from   dual
spool off;
exit 0;
{code}
:p