The Sybase Listener distributed with the Server Option can handle up to 128 concurrent connection requests. Sybase can provide a code zap for use in rare cases, when the number of concurrent connection requests exceeds 128, to enable the Server Option to handle up to 300 concurrent connection requests.
The volume of concurrently managed connection requests can also be increased by the activation of more listeners on different ports, and different context handler transaction names can be associated with different listener names.
Careful tuning may be required for a high volume of concurrent connection requests in a two-tier environment where the context handler task owns the socket for a connection and is active for the life of the user RPC task. The CICS MXT parameter should be set accordingly, and the TCLASS parameter can be used to restrict the number of concurrent context handler tasks for a listener.
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