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
 
Max & min size of CI & CA in VSAM

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

New User


Joined: 17 Jan 2007
Posts: 6
Location: Pune

PostPosted: Thu Jan 25, 2007 1:02 pm    Post subject: Max & min size of CI & CA in VSAM
Reply with quote

Hi,

Can anyone tell me the exact Min. & Max. size of CI & CA
Back to top
View user's profile Send private message

pravena

New User


Joined: 31 Jan 2007
Posts: 9
Location: chennai

PostPosted: Wed Feb 07, 2007 1:39 pm    Post subject:
Reply with quote

Control Interval is analogous to a physical block for QSAM
files. It is the unit of I/O. Must be between 512 bytes to
32 k.
Usually either 2K or 4K. A larger control interval
increases performance for sequential processing while the
reverse is true for random access. Under CICS when a record
is locked, the entire CI gets locked.

Control Area is a group of control intervals. CA is used
during allocation. CA size is calculated based on the

allocation type (cyl, tracks or records) and can be max of 1
cylinder
Back to top
View user's profile Send private message
vijaykorde
Currently Banned

New User


Joined: 17 Jan 2007
Posts: 6
Location: Pune

PostPosted: Wed Feb 07, 2007 5:38 pm    Post subject: Re: Max & min size of CI & CA in VSAM
Reply with quote

Thank Yoy Very Much pravena
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 5 Fri May 04, 2018 12:42 pm
No new posts IDCAMS RENAMING VSAM FILE ALONG WITH ... upendrasri JCL & VSAM 11 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
No new posts VSAM File free space sancraig16 JCL & VSAM 13 Fri Mar 30, 2018 1:02 am

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