Home > Ask the Data Center Experts > CICS Questions & Answers > Can a program use IXLLIST macros in CICS?
Ask The Data Center Expert: Questions & Answers
EMAIL THIS

Can a program use IXLLIST macros in CICS?

Robert Crawford EXPERT RESPONSE FROM: Robert Crawford

Pose a Question
Other Data Center Categories
Meet all Data Center Experts
Become an Expert for this site


Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us   


>
QUESTION POSED ON: 10 December 2007
Is there any way to have a program use IXLLIST macros in CICS when the IXLLIST is APF?

>
This is tough because, as you know, CICS application programs run unauthorized. I can think of two things:
  • Your CICS program could call a user written SVC routine. Since the SVC receives control in authorized state, it could either issue the IXLLIST requests or branch back into the CICS program. I must stress that both of these solutions, especially the latter, are dangerous to system integrity. The handshakes between the CICS program and the SVC should be carefully controlled.

  • A TCB running as APF authorized can issue the IXLLIST macros. However, there are rules governing non-authorized tasks attaching authorized children, so you won't be able to do it from CICS' quasi-reentrant TCB. I'm not sure if this will work, but you could start the authorized TCB from the original job step, then attach CICS' main task (entry point DFHSIP) as a subtask. From there it's a matter of writing handshakes between the CICS programs and the authorized TCB.

The easiest answer may be to use some other mechanism to share data across the Sysplex. If this is a purely CICS application, shared temporary storage queue servers will do the trick. Failing that, there's everyone's favorite kluge, a shared VSAM file.


BROWSE BY TAG
CICS Newsletter,   CICS,   Mainframe operating systems and management,   Server hardware,   Mainframe computers,   VIEW ALL TAGS

Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us   



RELATED CONTENT
CICS Newsletter
Does IBM's mainframe business constitute a monopoly?
IBM z/OS 1.11 preview: New features and functions
New statistics for CICS Transaction Server 3.2
Manage CICS workloads with transaction classes
Run CICS in batch to beat a shrinking batch window
Ensuring CICS security with the Web Services Security standard
Use DFHLS2WS to expose CICS applications as a Web service
Using IBM IPCS to battle software bugs
CICS and Web services: Ready to go
Using External Call Interface (EXCI) to access CICS

CICS
Which MQ Queue is related with which CICS transaction?
VSAM files in CICS -- Batch report help
Reading VSAM data from different LPARs
Finding executed statements in CICS
Submitting a batch job from CICS
Automating FTP transfers to AIX
FTP a dataset from MVS to Linux
Mainframe FTP - A simple check
Failed arithmetic operations on CICS programs written in C
Does replicating DB2 tables into CICS tables affect CPU usage?

Mainframe operating systems and management
Roadmap to mainframe application modernization
Improve CICS Web services security and handle Web transaction requests
Coding a simple mainframe cryptography program
How is CICS prepared for future IT market demands?
Why IBM should listen to Neon Software, customers on zPrime
Aussie financial firms dump Unix, Windows for Linux on the mainframe
Using cryptography on the mainframe: An amateur's guide
How mainframes fit into cloud computing
IBM z/OS 1.11 preview: New features and functions
Neon Software CEO rejects IBM warnings on mainframe licensing issues due to zPrime

RELATED GLOSSARY TERMS
Terms from Whatis.com − the technology online dictionary
epoch  (SearchDataCenter.com)
ISPF  (SearchDataCenter.com)
job  (SearchDataCenter.com)
Job Entry Subsystem  (SearchDataCenter.com)
job scheduler  (SearchDataCenter.com)
job step  (SearchDataCenter.com)
MVS  (SearchDataCenter.com)
P/390  (SearchDataCenter.com)
Remote Job Entry  (SearchDataCenter.com)
z/OS  (SearchDataCenter.com)

RELATED RESOURCES
2020software.com, trial software downloads for accounting software, ERP software, CRM software and business software systems
Search Bitpipe.com for the latest white papers and business webcasts
Whatis.com, the online computer dictionary



Search and Browse the Expert Answer Center
Search and browse more than 25,000 question and answer pairs from more than 250 TechTarget industry experts.
Browse our Expert Advice



Building Green Data Centers
HomeNewsTopicsITKnowledge ExchangeTipsBlogsMultimediaWhite PapersEvents
About Us  |  Contact Us  |  For Advertisers  |  For Business Partners  |  Site Index  |  RSS
SEARCH 
TechTarget provides technology professionals with the information they need to perform their jobs - from developing strategy, to making cost-effective purchase decisions and managing their organizations' technology projects - with its network of technology-specific websites, events and online magazines.

TechTarget Corporate Web Site  |  Media Kits  |  Site Map




All Rights Reserved, Copyright 2005 - 2009, TechTarget | Read our Privacy Policy
  TechTarget - The IT Media ROI Experts