On Tuesday, 08/19/2008 at 10:41 EDT, "Martin, Terry R. (CMS/CTR) (CTR)"
<[EMAIL PROTECTED]> wrote:

> We have two environments that we are building as part of our POC. We
> ship data via DB2 Connect from the mainframe DB2 to a Linux guest via a
> HiperSockets Network. In our DEV environment all of our tables process
> without issue. In our VAL environment there are six tables that the SQL
> fails for. We have been engaged with IBM via a PMR on this and have been
> going back and forth. At this point it appears that the issue is with
> the number of rows. In the SQL when they do an SELECT * and do not
> specify the rows it works. When they specify the tables in the Select it
> apparently increases the size of the SQL and it never gets to the
> mainframe. It looks like it is a 2k buffer limitation somewhere. Is
> there anything in the TCP/IP stack in z/Linux or any network setting in
> z/Linux that would enforce this limitation?

Verify that the MFS (CHPARM= or OS= in IOCP) and MTU for the HiperSockets
connection are the same for your DEV and VAL environments.

Alan Altmark
z/VM Development
IBM Endicott

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