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CICS SIGNON - Signon

CICS SIGNON provides signon management capabilities, enabling signon processing and output processing in CICS environments. It provides efficient signon capabilities for CICS applications.

What is CICS SIGNON?

CICS SIGNON provides signon management capabilities, enabling signon processing and output processing. It provides efficient signon capabilities, allowing applications to manage signon operations.

Command Syntax

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EXEC CICS SIGNON
    [RESP(response-code)]
    [RESP2(response-code-2)]
END-EXEC.

Parameters Explained

RESP Parameters

Response codes returned by the command:

  • RESP: Primary response code - indicates the success or failure of the signon operation
  • RESP2: Secondary response code - provides additional error information when RESP indicates failure
  • Always check these codes for command success before proceeding with data processing
  • Handle command failures appropriately to prevent application errors

Signon Types

1. Basic Signons

  • Basic signons: Standard signon operations that handle simple signing on without special formatting
  • Mapped signons: Signon operations that use predefined field mappings to structure signon data
  • Unmapped signons: Raw signon operations that handle unstructured signing on without predefined field mappings
  • Custom signons: Specialized signon operations designed for specific application requirements

2. Advanced Signons

  • Advanced signons: Complex signon operations that handle sophisticated signing on processing and validation
  • Secure signons: Signon operations that include encryption and security features for sensitive signing on
  • Encrypted signons: Signon operations that automatically encrypt signon data
  • Compressed signons: Signon operations that handle compressed signing on streams and automatically compress signon data

3. Specialized Signons

  • Specialized signons: Signon operations tailored for specific protocols or communication methods
  • High-performance signons: Optimized signon operations designed for maximum throughput and efficiency
  • Low-latency signons: Signon operations optimized for minimal delay and real-time processing requirements
  • High-throughput signons: Signon operations designed to handle large volumes of signing on efficiently

Implementation Example

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WORKING-STORAGE SECTION.
01 WS-RESPONSE            PIC S9(8) COMP.
01 WS-RESPONSE2           PIC S9(8) COMP.
 
PROCEDURE DIVISION.
    * Signon operation
    EXEC CICS SIGNON
        RESP(WS-RESPONSE)
        RESP2(WS-RESPONSE2)
    END-EXEC.
    
    IF WS-RESPONSE NOT EQUAL DFHRESP(NORMAL)
        EXEC CICS WRITE OPERATOR
            TEXT('SIGNON command failed')
        END-EXEC
        EXEC CICS RETURN END-EXEC
    END-IF.
    
    * Signon operation completed successfully
    * Continue processing

Signon Processing

1. Signon Preparation

Signon preparation includes:

  • Signon validation - ensuring the signon operation is properly configured and authorized
  • Signon formatting - preparing data structures and buffers for signon data
  • Signon encoding - setting up proper character encoding and data transformation
  • Signon processing - initializing the signon operation and preparing for signing on

2. Signon Transmission

Signon transmission includes:

  • Signon routing - directing signon data to the appropriate processing location
  • Signon delivery - ensuring signon data reaches the correct destination within the application
  • Transmission confirmation - verifying that signon was completed successfully
  • Error handling - managing transmission failures and implementing retry mechanisms

3. Output Management

Output management includes:

  • User management - handling user sessions and maintaining connection state
  • Output formatting - structuring signon data for presentation or further processing
  • User experience - ensuring smooth data flow and responsive application behavior
  • Performance optimization - maximizing signon efficiency and minimizing resource usage

Common Response Codes

Success Response Codes

  • NORMAL (0): Signon operation completed successfully - signing on was completed without errors
  • SIGNON (4): Signon operation completed - operation completed with signon-specific status

Error Response Codes

  • INVREQ (16): Invalid request - the signon operation parameters are incorrect or unauthorized
  • NOTFND (20): Resource not found - the specified signon resource does not exist
  • LENGERR (22): Length error - the signon data length exceeds expected limits
  • SIGNON (24): Signon error - a signon-specific error occurred during the operation

Best Practices

1. Signon Preparation

  • Prepare signon appropriately - ensure all necessary resources and configurations are in place
  • Validate signon content - verify that signon data meets expected format and quality standards
  • Handle different signon types - implement flexible processing to accommodate various signing on formats
  • Ensure signon integrity - maintain data consistency and prevent corruption during signing on

2. Error Handling

  • Check all response codes - always examine both RESP and RESP2 for complete error information
  • Handle signon failures - implement appropriate recovery mechanisms for failed signon operations
  • Implement retry logic - provide automatic retry capabilities for transient failures
  • Log error conditions - maintain detailed logs for troubleshooting and monitoring purposes

3. Performance Optimization

  • Minimize signon operations - reduce unnecessary signon calls to improve overall performance
  • Use efficient signon formats - choose appropriate data formats to minimize processing overhead
  • Optimize user updates - streamline user interface updates to reduce response time
  • Manage user resources - efficiently allocate and manage system resources for signon operations

Explain It Like I'm 5 Years Old

Imagine you're signing on:

When you want to sign on, you say hello and sign on. If you sign on, you join. If you don't sign on, you don't join.

CICS SIGNON is like signing on. The computer program says hello and signs on. If it signs on, it joins. If it doesn't sign on, it doesn't join.

Just like you sign on, the computer program signs on!

Exercises

Exercise 1: Signon Operation

Write a CICS SIGNON command to perform a signon operation.

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EXEC CICS SIGNON
    RESP(WS-RESPONSE)
    RESP2(WS-RESPONSE2)
END-EXEC.

Exercise 2: Signon Processing

How would you implement comprehensive signon processing that handles different signon types and requirements?

Answer: Identify different signon types and appropriate handling, implement signon validation and encoding, handle different signon types and capabilities, implement proper error handling for signon failures, optimize signon operations for performance, and maintain signon integrity throughout the process.

Quiz

Question 1

What is the primary purpose of CICS SIGNON?

Answer: B) To provide signon management capabilities

Question 2

Which parameter specifies the response code?

Answer: A) RESP

Related Concepts

CICS Signon Processing

Signon processing and output in CICS

CICS User Management

User management and user interaction in CICS

CICS Output Processing

Output processing and signon display in CICS