How to use dbms_pipe to execute a shell program

Hi ,
I have a stored procedure....with an if else condition in it
what i want is
if condition is true... then
execute the shell script
else
do nothing
how do i achieve this ? how do i execute a shell script from with in stored proc .. i heard dbms_pipe can be help ful ..could any one throw more light or an example to achieve this?

learning_man wrote:
sure i have gone through that option... but the thing is that.....i wnat to run the shell script only if a certain condition inside the stored proc passed some thing like
if condition = true then
dbms_scheduler.create_job(
job_name   => 'TESTSH',
job_type   => 'EXECUTABLE',
job_action => '/mydir/myscript.sh',
start_date => SYSTIMESTAMP,
enabled    => TRUE,
comments   => 'testsh');
else
dont do anything...
end if;
where as scheduler is used to schedule .... the time... i dont want to schedule the time.... i want to run the shell script based on some condition becoming true inside the procAbove code snippet does exactly what you're talking about.
Max
http://oracleitalia.wordpress.com

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Any payment method selection data
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Line item information the payment documents generated upon posting the payment proposal
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14. Click .
If you want to refresh the screen in order to view the current status (processing step) of the payment program click at any time.
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If You Want To
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    Automatic Payment Transactions: Status (3)
The system displays the message, "Proposal run has been scheduled."
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    Automatic Payment Transactions: Status (4)
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18. Perform one of the following:
If You Want To
Then
Go To
Execute the payment run
Click .
Step 19
Edit the payment proposal
Click .
Step 43
Display the payment proposal
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Step 54
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Step 57
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Select Edit Proposal Delete.
Step 60
Display the proposal list in a printer friendly format
Select Edit Proposal Proposal List....
Step 62
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Select Edit Proposal Exception List....
Step 67
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Step 72
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If You Want To
Then
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Select to the left of Start immediately.
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    Automatic Payment Transactions: Status (5)
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Step 23
Display the payment proposal
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Step 26
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Click .
Step 29
Display the payment list in a printer friendly format
Select Edit Payments Payment List.
Step 32
Display only the exception (error) invoices or credits
Select Edit Payments Exception List.
Step 36
Print the payment run information
Click .
Step 40
Exit this transaction
Step 72
    Job Log Entries for F110-XXXX-XXXX / XXXX
23. Review the displayed information.
24. Click .
25. Return to Step 22.
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27. Click .
28. Return to Step 22.
    Job Log Entries for F110-XXXX-XXXX-X / XXXX (2)
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30. Click .
31. Return to Step 22.
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32. Click .
    Payment list
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34. Click .
35. Return to Step 22.
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36. Click .
    Payment list (2)
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38. Click .
39. Return to Step 22.
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·         Start immediately
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·         Target computer
·         Job name
41. Click .
42. Return to Step 22.
    Accounting clerk
43. Click .
    Edit Payment Proposal: Payments
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If You Want To
Then
Go To
Continue with the payment process
Click .
Step 18
Review/edit invoice information for the payment (invoice numbers, discounts, payment amounts, etc).
1. Click on the line you want to select.
2. Click .
Step 46
Change the key payment information (payment method, house bank, payee name and address, etc.)
1. Click on the line you want to select.
2. Click .
This option does not work for lines that have exceptions.
Step 51
    Edit Payment Proposal: Open Items
46. Double-click on the line you want to choose.
    Change Line Items
47. As required, complete/review the following fields:
·         Payment block
·         Discount amount
·         Cash discount %
48. Click .
49. Click .
50. Return to Step 45.
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53. Return to Step 45.
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55. Click .
56. Return to Step 18.
    Job Log Entries for F110-XXXX-XXXX-X / XXXX (3)
57. Review the displayed information.
58. Click .
59. Return to Step 18.
    Delete proposal
60. Click .
    Automatic Payment Transactions: Status (7)
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61. Go to Step 72.
    List Variant (3)
62. As required, complete the following field:
·         Variant
63. Click .
    Payment list (3)
64. Review the displayed information.
65. Click .
66. Return to Step 18.
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67. As required, complete the following field:
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68. Click .
    Payment list (4)
69. Review the displayed information.
70. Click .
71. Return to Step 18.
72. Click until you return to the SAP Easy Access screen.
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Result
You have executed a payment proposal, executed and posted a payment run and printed checks.
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