Portal | Manuals | References | Downloads | Info | Programs | JCLs | Mainframe wiki | Quick Ref
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Profile Log in to check your private messages Log in
 
Release Freespace from VSAM datasets

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> JCL & VSAM
View previous topic :: :: View next topic  
Author Message
space_admin

New User


Joined: 04 Apr 2006
Posts: 7

PostPosted: Wed Apr 12, 2006 5:40 pm    Post subject: Release Freespace from VSAM datasets
Reply with quote

Hello together,

is there any reason NOT to release freespace from VSAM components? Here an example:

SPLITS-CI-------------93
SPLITS-CA--------------0
FREESPACE-%CI---------40
FREESPACE-%CA---------10
FREESPC-------2101248000

HI-A-RBA------2949120000
HI-U-RBA-------942243840

SPACE-TYPE------CYLINDER
SPACE-PRI-----------4000
SPACE-SEC------------300

What is a possible reason for this large freespace? When I calculate:
number ci-splits multiply with freespace per ci, I come to 2MB not to 2GB. That means in my opinion that the primary space is too large.

Now it is 1/3 full so why don't define a new cluster with 1/3 space and repro the data?

Are there any tools which release the space in a easier manner?

Kind regards,

space_admin
Back to top
View user's profile Send private message

martin9

Active User


Joined: 01 Mar 2006
Posts: 290
Location: Basel, Switzerland

PostPosted: Wed Apr 12, 2006 6:53 pm    Post subject:
Reply with quote

hy space_admin,

i don't know any method to do this.
the FREESPACE %CI says only that this percentage
of space must be free or a control interval split will
automatically occur. the same for FREESPACE %CA,
what means analog to a CI, that this control area
automatically splits to fit the FREESPACE requirement.
if you think this is too large then minimize this value.
therefore create any new cluster with same size,
but with different FREESPACE values, and repro this.
but this decision is up to your choice...

martin9
Back to top
View user's profile Send private message
space_admin

New User


Joined: 04 Apr 2006
Posts: 7

PostPosted: Thu Apr 13, 2006 1:32 pm    Post subject: Re: Release Freespace from VSAM datasets
Reply with quote

hi martin9,

Quote:

hy space_admin,

i don't know any method to do this.


to do what?

I have a question to you:

For this dataset: what size is the minimum freespace of this data component?

Kind regards,

space_admin
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> JCL & VSAM All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts Not able to export the VSAM cluster sandeep kumar302 JCL & VSAM 6 Fri May 04, 2018 12:42 pm
No new posts IDCAMS RENAMING VSAM FILE ALONG WITH ... upendrasri JCL & VSAM 12 Tue Apr 17, 2018 10:42 pm
No new posts VSAM file NOT Found error while proce... SumaReva CICS 5 Wed Apr 11, 2018 9:54 pm
No new posts VSAM - Accessing beyond record size Benchwarmer JCL & VSAM 6 Wed Apr 11, 2018 9:20 pm
This topic is locked: you cannot edit posts or make replies. Unavailable RECON datasets while exec... abdulrafi JCL & VSAM 10 Fri Apr 06, 2018 12:45 pm

Facebook
Back to Top
 
Job Vacancies | Forum Rules | Bookmarks | Subscriptions | FAQ | Polls | Contact Us