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G&R » Support » Known Errors  

Known Errors

These are the known errors in our products, logged as reported with versions and platforms affected as well as corrections and work-arounds.

This list is largely historical, since it records all problems that have been reported throughout G&R history. Only the most recently reported problems still exist, unless you are using a very old copy of the product, in which case you should update the product to the most recent version.

E0896: Loss of incoming sessions when many arrive simultaneously

Product: Gspool, GUFTsrv
Platform: Windows
Status: Fixed in R6.1, fix available for 6.0
Last updated: 2003-08-13 12:12:12

Gspool and GUFTsrv are both servers that accept incoming
connections. Generally print reports for Gspool, or file
transfer requests for GUFTsrv arrive sporadically, but in some
situations a mainframe might initiate a large number of print or
transfer requests simultaneously, causing the same large number
of incoming connections to arrive at the Host Links system
simultaneously, or nearly so. Because of Windows' inability to
deal with large numbers of processes, the Windows version of the
Host Links listener is a single process that starts a new thread
for each such session. The start up time needed to start very
many threads was so long that some of the connection attempts
would time-out and fail. Generally such failures simply cause
the mainframe to retry after an interval, but in some cases this
caused the mainframe system to set the Host Links system in a
locked state, and required mainframe operator intervention to
restart the print or file transfers.

The listener interface is rewritten to handle such storms of
connections without losing any.

Please note that if you are using OSI-transport then you need
the latest Marben OSI stack, V 3 or later in order to use the
fix for R6.0 or when you install R6.1.

If you run Windows 2000 or Windows XP you need

If you run Windows NT4 you need 'marben301_nt4.exe'

Please remove any previous Marben stack as well as the
'osillc.sys' driver from your system and reboot, before you try
to install the new stack.

Note: You can't use the new stack with Host Links versions prior
to 6.0.3.
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