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
 
Different between VSAM ESDS file to COBOL sequential file

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

New User


Joined: 26 Feb 2007
Posts: 24
Location: chennai

PostPosted: Tue Mar 27, 2007 8:28 pm    Post subject: Different between VSAM ESDS file to COBOL sequential file
Reply with quote

Any body know
What is the different between vsam esds file to cobol sequential file
Back to top
View user's profile Send private message

dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Tue Mar 27, 2007 10:27 pm    Post subject:
Reply with quote

Hello,

There is nothing named a "COBOL sequential file". There is a type of file that is Physical Sequential (PS).

ESDS uses vsam definition and i/o. PS files are defined (typically via JCL) as they are created and are accessed via qsam.

Please post more detail if you would like additional info.
Back to top
View user's profile Send private message
expat

Global Moderator


Joined: 14 Mar 2007
Posts: 8629
Location: Back in jolly old England

PostPosted: Wed Mar 28, 2007 12:40 pm    Post subject:
Reply with quote

ESDS is the VSAM equivilent of a PS file.

The original idea was to replace PS by ESDS which supposedly had faster I/O but with these days of RAID, Cache, NVS etc. etc. the DASD perform much much faster than they ever did before.

Additional functionality of ESDS is that it can be overlayed by an AIX.
Back to top
View user's profile Send private message
raman.k

New User


Joined: 26 Feb 2007
Posts: 24
Location: chennai

PostPosted: Wed Mar 28, 2007 2:50 pm    Post subject: Thanks
Reply with quote

Thanks for all
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 Where to get sample for processing RM... vice_versa PL/I & Assembler 2 Tue Jan 16, 2018 2:03 pm
No new posts VSAM dataset not found abdulrafi JCL & VSAM 5 Fri Jan 12, 2018 11:19 am
No new posts COB2 file processing rizwanaccy COBOL Programming 8 Tue Jan 02, 2018 1:00 pm
No new posts KSDS and Index file in cobol deepak14450 COBOL Programming 9 Fri Dec 22, 2017 9:36 am
No new posts Preserve order in Input File pshongal DFSORT/ICETOOL 13 Thu Dec 21, 2017 4:20 pm

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