Service id from a shell script

Question

I'm attempting to pass a variable into a korn shell script in order to obtain a service_id, which we need to use for load balancing purposes.
JOB_STREAM_ID=20
sqlplus user/password@server <<EOF
var num_ number;
begin
select Service_ID
into   :num_
from   job_stream_service_mapping
where  Stream_ID = $JOB_STREAM_ID;
end;
exit :num_;
EOF
$ echo $?The following errors appear
SP2-0670: Internal number conversion failed
where  Stream_ID = ;
ERROR at line 5:
ORA-06550: line 5, column 21:
PL/SQL: ORA-00936: missing expressionObviously the $JOB_STREAM_ID variable is not being interpreted properly. I have also tried ${JOB_STREAM} and `$JOB_STREAM`. Not sure what the difference is to be honest!
Could any of you help out?
PS: I was unsure where to post this, so if I need to post this question elsewhere feel free to state which forum that might be.
thx
P;

Answer 1

I now get the following errors:
Stream_ID = $JOB_STREAM_ID;
PLS-00181: unsupported preprocessor directive '$JOB_STREAM_ID'
SQL> SP2-0670: Internal number conversion failedbased no the following script:
JOB_STREAM_ID=20
sqlplus apps/n3wsys@dolnsgc3 <<EOF
var num_ number;
begin
select Service_ID
into   :num_
from   job_stream_service_mapping
where  Stream_ID = \$JOB_STREAM_ID;
end;
exit :num_;
EOF