Middleware Best Practices › CICS Socket Server Timeout Values

CICS Socket Server Timeout Values

It is critical to understand and set appropriate timeout values of the CICS Socket Server.

Business Value

When the timeout values are set to the appropriate values for your business, the client server applications operate with the best throughput possible. By using the TIRSLEXT and TIRSLTMX exits, the value a timeout is set to can be controlled by trancode, CICS region and down to microseconds.

Additional Considerations

The timeout values can be defined in two ways.

• Set the values when the CICS Socket Server is defined in your CICS region. The shortest timeout allowed using this method is 1 second.
• Set the values in the TIRSLEXT and TIRSLTMX exits. Using the exits lets you control the timeout values based on the CICS Socket Server trancode, CICS region, or both as well as being able to set the timeout value to microseconds.

No matter which method you use to set the timeout values, you want to have very few GIVESOCKET or NO INPUT DATA errors when processing requests. It may take several times of trying different settings to find the combination that is right for your environment.