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Status Delivered
Workspace CICS Transaction Server for z/OS
Categories Runtime
Created by Guest
Created on Jul 19, 2012

RELATED IDEAS

Ability to Manage Yielding Loops

When a task goes into a yielding loop (e.g., an endless loop where the only EXEC CICS statement is a VSAM read of the same record, which is in a buffer after the first read), there needs to be some mechanism for purging it and/or notifying someone (e.g., a console message). As it is now, tasks will line up behind the one in a yielding loop and can soon cause CICS to go short on storage before it
is manually detected and addressed.

Idea priority Medium
  • Guest
    Reply
    |     Oct 5, 2015

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Transaction Processing
    Product - CICS Transaction Server

    For recording keeping, the previous attributes were:
    Brand - WebSphere
    Product family - Transaction Processing
    Product - CICS Transaction Server

  • Guest
    Reply
    |     Jun 21, 2014

    For the specific use case of a Application program EXEC CICS READ's from a VSAM file a user can define a "file request" policy to limit the number of read requests to a specific threshold and abend task is threshold exceeded. This is available in CICS TS 5.1

    For the general case of any EXEC CICS command the user could define a "elapsed time" policy to catch a yielding loop and abend task if that threshold is exceeded. This is available in CICS TS 5.2

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