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
 
Information required on VSAM Keywords LOG/LOGSTREAMID

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

New User


Joined: 11 Dec 2007
Posts: 26
Location: INDIA

PostPosted: Wed Aug 26, 2009 11:07 am    Post subject: Information required on VSAM Keywords LOG/LOGSTREAMID
Reply with quote

Hello All,
I have little knowledge on keyword LOG/ LOGSTREAMID while defining a VSAM Cluster. As far as i believe is that these keywords are basically defined in Define CLUSTER Command for Recover purpose. In SOme of the IBm Manual i received information that they are used for RLS File.
What I am not sure is the below doubts which i am thinking ?

IS these keywords are only restricted/confined to RLS file or can we use these keywords in normal VSAM file as well (KSDS,ESDS etc) ?

In DEFINE CLUSTER Command we use Recovery/ Reuse for the recovery purpose, are these keywords not used while defining RLS VSAM File ?

What is the major difference between LOG (UNDO0 and LOG (ALL) ?

What is forward and backout recovery ?

Thank you for your help in advance. icon_smile.gif
Back to top
View user's profile Send private message

expat

Global Moderator


Joined: 14 Mar 2007
Posts: 8666
Location: Back in jolly old England

PostPosted: Wed Aug 26, 2009 11:24 am    Post subject:
Reply with quote

Those are RLS keywords.

To read the IDCAMS manual, Click HERE
Back to top
View user's profile Send private message
harsh singh

New User


Joined: 11 Dec 2007
Posts: 26
Location: INDIA

PostPosted: Wed Aug 26, 2009 11:36 am    Post subject:
Reply with quote

Thanks for replying EXPAT, i have gone through the manual suggested by you but still i am not able to convince my self on below queries

In DEFINE CLUSTER Command we use Recovery/ Reuse for the recovery purpose, are these keywords not used while defining RLS VSAM File ?

I know it is painful but can you please throw some light on it ?

Thank you for your help
Back to top
View user's profile Send private message
expat

Global Moderator


Joined: 14 Mar 2007
Posts: 8666
Location: Back in jolly old England

PostPosted: Wed Aug 26, 2009 11:46 am    Post subject:
Reply with quote

The VSAM options are usually given in an example of creating a RLS dataset for whatever product is going to use RLS.

I usually just copy the definition from the manual, change names and DASD allocations and let it get on. I can't really say that I have paid too much attention to what is in the cluster definitions just so long as it works.
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