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Steps to Change the Length of an IMS DB

 
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naive

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Joined: 26 Apr 2005
Posts: 46
Location: LA

PostPosted: Tue May 02, 2006 11:01 pm    Post subject: Steps to Change the Length of an IMS DB
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Hello!

Can anyone walk me thru the steps to change the length of an IMS DB?
As far as I understand:
a)Change the DBD with the new length
b)Recompile all PSBs accessing that DB
c)Create ACBs (?)
d)Change the IO-area used by the cobol programs to access the DB
e)Recompile all the cobol programs using that DB (to pick up the changed IO area)

I am not sure if I have to perform the steps b and c.

Would be nice if anyone could throw some light on this.
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gowtham_1982
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Joined: 02 Dec 2005
Posts: 109

PostPosted: Wed May 03, 2006 3:43 pm    Post subject: Re: Steps to Change the Length of an IMS DB
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naive wrote:
Hello!

Can anyone walk me thru the steps to change the length of an IMS DB?
As far as I understand:
a)Change the DBD with the new length
b)Recompile all PSBs accessing that DB
c)Create ACBs (?)
d)Change the IO-area used by the cobol programs to access the DB
e)Recompile all the cobol programs using that DB (to pick up the changed IO area)

I am not sure if I have to perform the steps b and c.

Would be nice if anyone could throw some light on this.




Hi naive,

we need to recompile the PSB's too i feel. this is mandate, if there happens to be change in key of segments.

Can you please throw some light on ACB?


thanks in advance,

Gowtham
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naive

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PostPosted: Wed May 03, 2006 10:25 pm    Post subject:
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Ummm I am not sure about the ACBs either. I know that they are made from a combination of the PSB and the DBD, and that usually they are required to run online IMS programs.
Other than that I am not at all sure about them.
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naive

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PostPosted: Wed May 03, 2006 10:25 pm    Post subject:
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And oh .. there is no change in the Key, only an increase in length of the DB due to increase in length of some nonkey fields.
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