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Full Discussion: Help with executing parallel sessions for same shell script with different but fixed parameters
Top Forums Shell Programming and Scripting Help with executing parallel sessions for same shell script with different but fixed parameters Post 302478442 by R0H0N on Wednesday 8th of December 2010 02:56:51 AM
Old 12-08-2010
If I m not wrong, you are trying to execute same query for 25 column ids on a customer table at a single time.

For that your following qeury will list out column ids in abc.txt file. Correct?

Code:
sqlplus -s $ORA_CONN <<EOF
SET SERVEROUTPUT ON
SET FEED OFF
spool abc.txt
BEGIN
   FOR i IN (SELECT ID FROM customer)
   LOOP
      DBMS_OUTPUT.put_line ( 'value ' || i.ID);
   END LOOP;
END;
/
spool off
EOF

abc.txt will look like
Quote:
1
2
3
4
5
..
..
25
Now to execute same query as follows on all listed column ids, you can write a script like


Code:
#!/bin/ksh

    # First list out Column ids in abc.txt file
sqlplus -s $ORA_CONN <<EOF
SET SERVEROUTPUT ON
SET FEED OFF
spool abc.txt
BEGIN
   FOR i IN (SELECT ID FROM customer)
   LOOP
      DBMS_OUTPUT.put_line ( 'value ' || i.ID);
   END LOOP;
END;
/
spool off
EOF

    # Now for each data in abc.txt, execute second query in background
for myID in `cat abc.txt | xargs`
do
sqlplus -s $ORA_CONN <<EOF!
        SPOOL ${rep_name}report_${rep_part}_${sysdate1}.txt;
        SELECT * FROM customer WHERE col1="$myID"
           AND (  col2='sumthing')
        UNION
        SELECT * FROM customer WHERE col1="$myID"
        AND (condition);
        Spool off;
exit
EOF! &
done

Last edited by R0H0N; 12-08-2010 at 03:59 AM.. Reason: Highlight important points
This User Gave Thanks to For This Post:
Opamps123
R0H0N
 

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LEARN ABOUT FREEBSD

atf-sh

ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME

     atf-sh [-s shell] -- interpreter for shell-based test programs

SYNOPSIS

     atf-sh script

DESCRIPTION

     atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library.

     atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL.  atf-sh executes the inter-
     preter, loads the atf-sh(3) library and then runs the script.  You must consider atf-sh to be a POSIX shell by default and thus should not
     use any non-standard extensions.

     The following options are available:

     -s shell	  Specifies the shell to use instead of the value provided by ATF_SHELL.

ENVIRONMENT

     ATF_LIBEXECDIR    Overrides the builtin directory where atf-sh is located.  Should not be overridden other than for testing purposes.
     ATF_PKGDATADIR    Overrides the builtin directory where libatf-sh.subr is located.  Should not be overridden other than for testing purposes.
     ATF_SHELL	       Path to the system shell to be used in the generated scripts.  Scripts must not rely on this variable being set to select a
		       specific interpreter.

EXAMPLES

     Scripts using atf-sh(3) should start with:

	   #! /usr/bin/env atf-sh

     Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh.  Instead, you have to hardcode
     the path to atf-sh in the script and then use the -s option afterwards as a single parameter:

	   #! /path/to/bin/atf-sh -s/bin/bash

ENVIRONMENT

     ATF_SHELL	  Path to the system shell to be used in the generated scripts.

SEE ALSO

     atf-sh(3)

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