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
 
Significance of RDF AND CIDF .

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> DFSORT/ICETOOL
View previous topic :: :: View next topic  
Author Message
jayant_tibhe

New User


Joined: 25 Feb 2006
Posts: 27
Location: Pune

PostPosted: Sat Feb 25, 2006 4:31 am    Post subject: Significance of RDF AND CIDF .
Reply with quote

Hi All,

Can anyone know me the exact role of RDF & CIDF in tthe VSAM.
Back to top
View user's profile Send private message

superk

Moderator Team Head


Joined: 26 Apr 2004
Posts: 4650
Location: Raleigh, NC, USA

PostPosted: Sat Feb 25, 2006 7:24 am    Post subject: Re: Significance of RDF AND CIDF .
Reply with quote

From the Internet:
Quote:

Q Explain the information contained in CI ?

A Control information consists of RDF (Record Descriptor Field) and CIDF (Control Interval Descriptor Field). Every CI contains one CIDF which is a field consisting of the last 4 bytes of a CI. It contains information about the offset and the length of free space in the CI. In case of fixed size records each CI contains two RDF's and each RDF is 3 bytes in length. In case of the variable size records,there is a separate RDF for each record in the CI. The size of the Data portion of the CI should be multiple of 512 bytes or 2,048 bytes. Max size of the CI is 32K. The size of the index portion of CI could be one of the following: 512, 1024, 2048, 4096.
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 -> DFSORT/ICETOOL All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts what is the significance of REPLACE=N... Bill Woodger JCL & VSAM 6 Thu Feb 07, 2013 1:10 pm
No new posts Significance of APOST and XREF in PARM Kalyan Chakravarthi JCL & VSAM 2 Fri Jan 18, 2013 5:06 pm
No new posts Significance of COBOL PROGRAM-ID kumar32149 COBOL Programming 3 Sat Apr 30, 2011 10:44 pm
No new posts Significance of level 49 with DB2 VAR... raghav08 DB2 5 Fri Sep 17, 2010 1:46 pm
No new posts Significance of value -252645136 whil... murugan_mf COBOL Programming 6 Tue Aug 17, 2010 10:52 am

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