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sandeep kumar302
New User
Joined: 14 Mar 2012 Posts: 81 Location: India
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Hi all,
I am working in a migration project in which i have to replace the IDMS by DB2. I have a cobol program which is calling a subprogram which used IDMS and then returns the data to the calling program.At high level, now my task is to replace the IDMS by DB2.
To achieve the above purpose, i need to first analyse the existing program which is quite large( more than 2000 lines of code). The program uses more than 10 files( flat as well as VSAM files), more than 20 copybooks and the program is calling so many subprograms including the subprograms which are using IDMS to fetch the data.
Can someone please share an analysis document to analyse the large cobol programs and give me suggestions on how to proceed. The problem with me is that i have close to 2.5 years of experience in Mainframe and the program is very large to maintain the logic flow.
Please advice me on how to procced and please share any analysis document.
Thanks a lot. |
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sureshpathi10
Active User
Joined: 03 May 2010 Posts: 154 Location: Kuala Lumpur
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Hi Sandeep,
I know it is always headache to understand somebody's code. Did you check with your colleagues whether they have any documentation for the old code ?
if don't, the easiest way would be preparing flowchart/functional specification side by side while you analyze. You won't get lost in the middle and It might help you in the future reference also. |
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sandeep kumar302
New User
Joined: 14 Mar 2012 Posts: 81 Location: India
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Thanks sureshpathi10.
Appreciate your suggestion. |
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prino
Senior Member
Joined: 07 Feb 2009 Posts: 1306 Location: Vilnius, Lithuania
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sandeep kumar302 wrote: |
... i need to first analyse the existing program which is quite large( more than 2000 lines of code)... |
You really don't know the meaning of large...
Pity it's not PL/I, I have an edit macro that shows you an outline of programs written in that language. |
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Pandora-Box
Global Moderator
Joined: 07 Sep 2006 Posts: 1592 Location: Andromeda Galaxy
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Sometime back : I used a tool called REVOLVE.It would just draw flowchar for a given program |
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sandeep kumar302
New User
Joined: 14 Mar 2012 Posts: 81 Location: India
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Hi Pandora-Box,
Do the tool REVOLVE cost and if yes then how much.
Hi prino,
For a person who has an experience of 2 years, it will be large. May be as i keep adding experience, this apparently will appear smaller. |
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