IBM Mainframe Forum Index
 
Log In
 
IBM Mainframe Forum Index Mainframe: Search IBM Mainframe Forum: FAQ Register
 

GSAM conversion in IMS DB to DB2 migration project


IBM Mainframe Forums -> IMS DB/DC
Post new topic   Reply to topic
View previous topic :: View next topic  
Author Message
asukumar

New User


Joined: 15 Apr 2009
Posts: 8
Location: bangalore

PostPosted: Tue Feb 18, 2014 1:12 pm
Reply with quote

Dear All,

Please can you suggest me on this?

We are responding to a proposal for IMS DB to DB2 migration. The inventory has 4000 GSAM files. I understand GSAM files would be using for checkpoint/restart within IMS.

My question is - if we are eliminating the IMS completely, would there be any need to migrate them to flat files?

Again, GSAM files are sequential in nature. If required, can't we just use them as it is after migration to DB2?

Basically, I'm trying to understand what/how would we use GSAM files after migrating to DB2.

I have been searching through the forum for this. Please help me with your suggestions. As I said, this is for proposal. We don't have complete details yet. So any thoughts on your previous experiences would help.

thanks in advance.
Back to top
View user's profile Send private message
enrico-sorichetti

Superior Member


Joined: 14 Mar 2007
Posts: 10872
Location: italy

PostPosted: Tue Feb 18, 2014 1:22 pm
Reply with quote

the application design must be completely reviewed ...
and the application logic using GSAM databases must be REDESIGNED from scratch
USER must reposition on input files and cleanup unwanted record from output

see here for a quick and dirty explanation of GSAM behavior
ibmmainframes.com/about56674.html

but it is really a shame that an organization preparing such a complex proposal is completely unaware of such basic IMS concepts icon_evil.gif
pretty poor business ethics also, sponsoring a project without the proper skills
Back to top
View user's profile Send private message
dick scherrer

Moderator Emeritus


Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix

PostPosted: Tue Feb 18, 2014 11:02 pm
Reply with quote

Hello,

You need to review how/why each of these exist and make sure that similar functionality (if needed) is incorporated into the db2 environment.

Is there no one with an in depth knowledge of ims/gsam involved with the project?
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic View Bookmarks
All times are GMT + 6 Hours
Forum Index -> IMS DB/DC

 


Similar Topics
Topic Forum Replies
No new posts 10 byte RBA conversion DB2 2
No new posts 10 byte RBA conversion -non applicati... JCL & VSAM 1
No new posts file manager is doing string conversion IBM Tools 3
No new posts SMF Record Date conversion failing CLIST & REXX 1
No new posts Assembler class assignment: stuck on ... PL/I & Assembler 12
Search our Forums:

Back to Top