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Connectivity: Server to Mainframe

Connectivity: Server to Mainframe

Connectivity: Server to Mainframe

Any advice on the best architecture solution for fast real-time interaction between an RS6000 and an MVS environment (which is running CICS)?

We are putting together an application where we need our server to access data on our mainframe and then respond to the server.... and speed is a critical factor.

Thanks much for your feedback.

RE: Connectivity: Server to Mainframe

Shouldn't be much of a problem.  Current CICS versions have TCP/IP support built in.
The only other issue is whether your AIX Apps people are up to speed on socket
programming.  Without more info., I'd be theorizing what's needed.  But what we learned:  

- Since speed is critical, you're talking more budget. That's a given.
- Avoid conversational transactions.
   - Error recovery within a conversation is messy.
- If required, security will be your toughest problem.
   -  We have an OS/390 - Sun setup, and Top Secret (RACF) verfication from the       Suns is a pain.
   -  Find yourself a RACF SAF manual and someone who knows 370 assembler.
- The transaction is only going to run as fast as the sum of the links in the data chain.   -  Fewer links =  faster.  
  -  Identify all the links before starting (TCP/IP, VTAM, shell, routers, disk, network...)
    -   In our case, we'd trip off  security request to a RACF socket         application. Get a reply. Then the data request.  And wait for it to return.  We             should've beefed our design so the transaction verifiies the ID and grabs the data         at one shot.  We got a couple  CPU upgrades  because of that one.  Our foul up,         your gain.     
Hope that helps.  Good luck.

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