How to capture the result of stored procedure through shell script? - sql

Question

I'm trying to execute stored procedure through shell script and try to get return from stored procedure but I didn't get any thing from the stored procedure on other hand same thing I do with sqlplus prompt and I'm able to get the result
sqlplus -silent xxx#xxx <<EOF
set serveroutput on
declare
DE_REC_COUNT number(10);
begin
DE_DUP_PROC ('T_MCL_30404_20150317_020','MCL','30404','FT',DE_REC_COUNT);
end;
EOF
Through sqlplus prompt
SQL> set serveroutput on
declare
DE_REC_COUNT number;
begin
DE_DUP_PROC ('T_MCL_30404_20150317_020','MCL','30404','FT',DE_REC_COUNT);
end;
0
PL/SQL procedure successfully completed.

Answer 1

The version of the anonymous block in the shell script will not be executed as shown, because you don't have a slash after the block to run it. If you run that you get no output at all. If you change it to have a slash:
sqlplus -silent xxx#xxx <<EOF
set serveroutput on
declare
DE_REC_COUNT number(10);
begin
DE_DUP_PROC ('T_MCL_30404_20150317_020','MCL','30404','FT',DE_REC_COUNT);
end;
/
EOF
then you'll see:
0
PL/SQL procedure successfully completed.
You've shown the interactive version in SQL*Plus without the slash too, but you must have had that to see the output you showed.
If you want the zero - which seems to be coming from a dbms_output call in your procedure, rather than directly from your anonymous block - n a shell variable you can refer to later, you can assign the output of the heredoc to a variable:
MY_VAR=`sqlplus -silent xxx#xxx <<EOF
set serveroutput on
set feedback off
declare
DE_REC_COUNT number(10);
begin
DE_DUP_PROC ('T_MCL_30404_20150317_020','MCL','30404','FT',DE_REC_COUNT);
end;
/
EOF`
printf "Got back MY_VAR as %s\n" ${MY_VAR}
Note that I've added set feedback off so you don't see the PL/SQL procedure successfully completed line. Now when you run that you'll see:
Got back MY_VAR as 0
and you can do whatever you need to with ${MY_VAR}. It depends what you mean by 'capture' though.

Answer 2

Here's an example of how it can be done by surrounding the code with the evaluation operators (` back quotes):
#!/bin/sh
results=`sqlplus -s xxx#xxx <<EOF
set serveroutput on feedback off
declare
DE_REC_COUNT number(10);
begin
DE_DUP_PROC ('T_MCL_30404_20150317_020','MCL','30404','FT',DE_REC_COUNT);
end;
/
EOF`
echo $results

Answer 3

Lets say for instance I have a below procedure which calculates the sum of two numbers and prints the total using dbms_output.put_line() method
CREATE OR REPLACE
PROCEDURE SUM
(
a IN NUMBER,
b IN NUMBER)
AS
total NUMBER;
BEGIN
total:= a + b;
dbms_output.put_line(total);
END;
Then in order to call this in our shell script we need to call this procedure in an anonymous block and store in a variable, later using echo we can execute the command.
plsqlcode=`sqlplus -silent hr/sandeep#orcl <<EOF
set serveroutput on
begin
sum(10,20);
end;
/
EOF`
echo $plsqlcode
Ideally this is not a recommended approach you should keep your shell and pl/sql code in separate files.