Maximum Number of Records on VSAM file?

Post your questions related to VSAM

Moderator: Moderator Group

Post Reply
popofrito
Member
Posts: 1
Joined: Fri Jul 12, 2013 8:29 pm
Location: Tuscan, AZ

Maximum Number of Records on VSAM file?

Post by popofrito » Fri Jul 12, 2013 8:34 pm

Is there a command to specify when defining a VSAM file that the maximum number or records it should ever hold is 100 records?

anu alexander
Member
Posts: 6
Joined: Fri Jul 05, 2013 7:52 pm

Post by anu alexander » Thu Jul 18, 2013 1:39 pm

i don't think so

DikDude
Moderator
Posts: 1001
Joined: Fri Jul 22, 2011 8:39 am
Location: usa

Post by DikDude » Thu Jul 18, 2013 9:33 pm

If the 101st records is to be written, what should happen? Throw the oldest record away? Stop the process? Other?

If we understood what you want to accomplish (not the mechanics but the functionality) we might have some suggestions.
Have a good one

User avatar
dbzTHEdinosauer
Moderator
Posts: 981
Joined: Mon Oct 02, 2006 8:31 pm

Post by dbzTHEdinosauer » Wed May 21, 2014 9:55 pm

no command.
vsam, unlike db2, does not have 'triggers',
thus the best you can do is
only have one module that is CALLed
(in batch: dynamic would be best, but you can link it as static ..
in CICS you don't have that problem, as every thing should be dynamically linked,
but IMUO it would be best in CICS to execute a CICS LINK to the module)
that way, you would have only two modules that deal with i/o
and could control the number of records,
but then you have the problem of determining the current record count.

easiest way would to have a integer counter in each record
(which would be the primary part of the alt-index and only allow 1 thru 100.)

but, then you have the logical question that bubbles up from this morass,
why do you only want 100 records?
Dick Brenholtz
JCL, SQL and code in programs have an irritating habit of doing what you say,
not what you meant.

academyindia4

Topic deleted by Admin

Post by academyindia4 » Tue Jan 19, 2016 12:48 pm

<< Content deleted By Admin >>

Post Reply

FREE TUTORIALS

Tutorials
Free tutorials from mainframegurukul
  • JCL Tutorial
    Covers all important JCL concepts.
  • Cobol Tutorial
    This tutorials covers all Cobol Topics from STRING to COMP-3.
  • DB2 Tutorial
    DB2 Tutorial focuses on DB2 COBOL Programming.
  • SORT Tutorial
    This Tutorial covers all important aspects of DFSORT with examples
  • CICS Tutorial
    This CICS tutorial covers CICS concepts and CICS Basics, CICS COBOL Programming.
Interview
Mainframe Interview questions



Other References
Mainframe Tools and others