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Shell script to catch PL/SQL return values

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# 1  
Old 03-23-2010
Question Shell script to catch PL/SQL return values
I tried searching the forum for similar posts but its closed now.
Would appreciate any help on this.
I am trying to capture return value from a select query into a variable.
DB is Oracle
I am able to spool it to a file but I donot intend to use it.

Here is my script that does not work Smilie
I am able to connect to the db but the value is not populated into variable
Code:
 #!/bin/sh
ORACLE_HOME=/opt/oracle/product/9.2.0
ORACLE_SID=$1
echo "Date is Fridayyyyy: $TODAY"
x = '$ORACLE_HOME/bin/sqlplus report/report@$ORACLE_SID <<EOF
declare 
var number;
select count(*) from report.CUBE_BUILD_INDICATOR;
dbms_output.put_line(var);
exit;
eof'
echo 'done 1'
echo $var
echo var
echo 'done 2'
echo x
echo $x

Last edited by jim mcnamara; 03-23-2010 at 12:49 PM.. Reason: code tags
# 2  
Old 03-23-2010
lots problems that I can see quickly:
Code:
 #!/bin/sh
ORACLE_HOME=/opt/oracle/product/9.2.0
ORACLE_SID=$1
echo "Date is Fridayyyyy: $TODAY"
x=$($ORACLE_HOME/bin/sqlplus report/report@$ORACLE_SID <<EOF
SET SERVEROUT ON SIZE 100000
declare 
  var number:=0;
BEGIN
  dbms_output.enable(100000);
  select count(*) 
    into var 
   from report.CUBE_BUILD_INDICATOR;
  dbms_output.put_line(var);
END;
/
exit;
EOF )
echo 'done 1'
echo var
echo $var
echo 'done 2'
echo x
echo $x

you need to mind spaces and capitalization; x=$( ) runs a process as a child and assigns the printed output to x;
SET SERVEROUT allows dbms_output to write to the tty
dbms_out.enable() is also required
EOF <-> EOF must match casewise
you need "select something into var" in order for var to have a value.
You must have gotten dozens of errors - both from PL/SQL and from shell.
# 3  
Old 03-23-2010
Thanks for the prompt reply. Variable still displays nulls. Is thr something major i am missing.
( Am a total novice in this )
# 4  
Old 03-23-2010
reread the post, please, copy it EXACTLY, don't add or remove spaces, or change case.
If that fails, get into sqlplus, cut and paste the PL/SQL stuff (from SET SERVEROUT ... to
Code:
END;
/

)onto the screen and run it.

---------- Post updated at 10:05 ---------- Previous update was at 10:03 ----------

I tried the pl/sql it works correctly as posted.
# 5  
Old 03-23-2010
Yeah the code works gud. But the value of x and var turns out null.
Any idea why.. infact var should atleast be 0 since its been initialized
# 6  
Old 03-23-2010
Quote:
Originally Posted by monie2717
Yeah the code works gud. But the value of x and var turns out null.
Any idea why.. infact var should atleast be 0 since its been initialized
Firstly, the variable "var" is declared in the anonymous PL/SQL block. It is not a shell variable in the caller environment. So, I'd think its scope would be local to the PL/SQL block, and you wouldn't see it in the Unix script.

Secondly, in order to set the value of "x", you may want to run sqlplus in "silent" mode. And also set a few SQL*Plus report environment parameters so as to ensure that only the value of "var" is printed. (Other stuff like the blurb, the feedback message etc. should not be printed.)

Try this -

Code:
#!/usr/bin/sh
ORACLE_HOME=/opt/oracle/product/9.2.0
ORACLE_SID=$1
echo "Date is Fridayyyyy: $TODAY"
x=$($ORACLE_HOME/bin/sqlplus -s report/report@$ORACLE_SID <<EOF
set heading off pages 0 feedback off
SET SERVEROUT ON SIZE 100000
declare 
  var number:=0;
BEGIN
  select count(*) 
    into var 
   from report.CUBE_BUILD_INDICATOR;
  dbms_output.put_line(var);
END;
/
exit;
EOF )
echo 'done 1'
echo var
echo $var
echo 'done 2'
echo x
echo $x

HTH,
tyler_durden
# 7  
Old 03-23-2010
it does not work .. can this be achieved without a pl sql block
and using just a select query and a linux variable .
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