Cross post (IBM-Main and TCPIP)

We are experiencing an unusual situation and I am wondering if anyone else has 
seen this at their shop. As phrased by my boss:

"We are currently experience a client timeout with HATS applications.  I'm 
calling it a client timeout because the CICS session associated with the user 
is active but the user received a timeout message. This issue is only with HATS 
applications and cross over business application lines."

My TCP/IP guy wants to implement NODELAYACKS for specific ports for problem 
resolution per the following IBM recommendation for TCP/IP WAS performance 
tuning:

- Consider specifying NODELAYACKS for ports. This may improve throughput for 
more trivial transactions, but it does add more overhead for more complex 
transactions. Using this option will cause the acknowledgments (ACKs) to be 
sent back immediately to the client, rather than waiting for more data to 
accumulate.

Because CICS still has the session as active, it holds on to the client's too 
long and, as you might expect, that has a bad ripple effect until CICS 
terminates the task at its timeout.

Any takers? :)

Bob


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