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Usage Note 11479: Connection to server dropped when multiple clients attempt connection to OpenVMS Alpha server

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When a client such as Enterprise Guide, JAVA or Visual Basic attempts a
connection to a SAS Integration Technologies IOM Server on an OpenVMS
Alpha host, the connection may be dropped or lost.  This problem is
likely to occur when UCX is used on the server and when multiple clients
request a connection to the server within a short period of time.

The recommended values for SOMAXCONN and SOMINCONN under Compaq TCP/IP
Services (also known as UCX) are:

   SOMAXCONN = 65535 (except on low-memory systems)
   SOMINCONN = SOMAXCONN.

Reference Chapter 2 of the Compaq TCP/IP Services for OpenVMS Tuning and
Troubleshooting manual for details.  Additional information about tuning
socket subsystem attributes is available in the Tuning Tru64 UNIX for
Internet Servers manual.


Operating System and Release Information

Product FamilyProductSystemSAS Release
ReportedFixed*
SAS SystemSAS Integration TechnologiesOpenVMS Alpha9.1 TS1M0
* For software releases that are not yet generally available, the Fixed Release is the software release in which the problem is planned to be fixed.