|
View previous topic :: View next topic
|
| Author |
Message |
ajay_udl
New User
Joined: 10 Oct 2006
Posts: 29
|
|
|
|
Hi All,
I have a VSAM file which is an input to a pgm.
I'm reading it in I-O mode, so that i can update it through the pgm.
The VSAM will be having a huge amount of data, and it may exceed to the maximum limit.
I wanted to define the VSAM in such a way that it can accomodate the maximum amount of data.
Could any one share the attributes for such a KSDS.
Thanks
Ajay. |
|
| Back to top |
|
 |
expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
|
|
|
|
Well so far you have told us what you want to do, but absolutely nothing to help you resolve your problem.
What are the record attributes, and how many records do you estimate will exist.
What are the current cluster definitions for that VSAM file. |
|
| Back to top |
|
|
dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
|
|
|
|
Hello,
I believe you have this part of the analysis somewhat turned around.
The proper way to estimate is to determine how much data & index & + is needed to accomodate the data requirement. Then calculation can begin on how that translates to physical space.
Knowing the biggest possible vsam file in all of mainframe land should not enter into considertation. |
|
| Back to top |
|
|
Robert Sample
Global Moderator
Joined: 06 Jun 2008
Posts: 8696
Location: Dubuque, Iowa, USA
|
|
|
|
| Quote: |
I wanted to define the VSAM in such a way that it can accomodate the maximum amount of data.
Could any one share the attributes for such a KSDS. |
Not without a LOT more information. There's many variables involved in VSAM file allocations and you really need to provide concrete data rather than just trying for the maximum and going backwards. Besides, the space management people at your site might not be happy if you try to allocate such a huge VSAM file without discussing it with them beforehand. |
|
| Back to top |
|
|
|
|
