How do you use CICS ISSUE SET?

Use CICS ISSUE SET with RESP parameters to check response codes and handle any errors appropriately.

What are the different types of sets?

Set types include basic sets (standard, mapped, unmapped, custom), advanced sets (advanced, secure, encrypted, compressed), and specialized sets (specialized, high-performance, low-latency, high-throughput).

When should you use CICS ISSUE SET?

Use CICS ISSUE SET when building applications that need to issue set operations, when implementing set management, when issuing sets, when building set systems, or when implementing set functionality.

CICS ISSUE SET - Issue Set

CICS ISSUE SET issues a set operation, enabling set management and output processing in CICS environments. It provides efficient set capabilities for CICS applications.

What is CICS ISSUE SET?

CICS ISSUE SET issues a set operation, enabling set management and output processing. It provides efficient set capabilities, allowing applications to issue set operations.

Command Syntax

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EXEC CICS ISSUE SET
    [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 set 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

Set Types

1. Basic Sets

Basic sets: Standard set operations that handle simple data assignment without special formatting
Mapped sets: Set operations that use predefined field mappings to structure set data
Unmapped sets: Raw set operations that handle unstructured data assignment without predefined field mappings
Custom sets: Specialized set operations designed for specific application requirements

2. Advanced Sets

Advanced sets: Complex set operations that handle sophisticated data processing and validation
Secure sets: Set operations that include encryption and security features for sensitive data
Encrypted sets: Set operations that automatically encrypt set data
Compressed sets: Set operations that handle compressed data streams and automatically compress set data

3. Specialized Sets

Specialized sets: Set operations tailored for specific protocols or communication methods
High-performance sets: Optimized set operations designed for maximum throughput and efficiency
Low-latency sets: Set operations optimized for minimal delay and real-time processing requirements
High-throughput sets: Set operations designed to handle large volumes of data 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.
    * Issue set
    EXEC CICS ISSUE SET
        RESP(WS-RESPONSE)
        RESP2(WS-RESPONSE2)
    END-EXEC.
    
    IF WS-RESPONSE NOT EQUAL DFHRESP(NORMAL)
        EXEC CICS WRITE OPERATOR
            TEXT('ISSUE SET command failed')
        END-EXEC
        EXEC CICS RETURN END-EXEC
    END-IF.
    
    * Set issued successfully
    * Continue processing

Set Processing

1. Set Preparation

Set preparation includes:

Set validation - ensuring the set operation is properly configured and authorized
Set formatting - preparing data structures and buffers for set data
Set encoding - setting up proper character encoding and data transformation
Set processing - initializing the set operation and preparing for data assignment

2. Set Transmission

Set transmission includes:

Set routing - directing set data to the appropriate processing location
Set delivery - ensuring set data reaches the correct destination within the application
Transmission confirmation - verifying that set 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 set data for presentation or further processing
User experience - ensuring smooth data flow and responsive application behavior
Performance optimization - maximizing set efficiency and minimizing resource usage

Common Response Codes

Success Response Codes

NORMAL (0): Set issued successfully - data was set without errors
SET (4): Set issued - operation completed with set-specific status

Error Response Codes

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

Best Practices

1. Set Preparation

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

2. Error Handling

Check all response codes - always examine both RESP and RESP2 for complete error information
Handle set failures - implement appropriate recovery mechanisms for failed set 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 set operations - reduce unnecessary set calls to improve overall performance
Use efficient set 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 set operations

Explain It Like I'm 5 Years Old

Imagine you're setting a table:

When you want to set a table, you put plates, cups, and silverware in the right places. If the table is set correctly, everyone can eat dinner. If the table isn't set correctly, you have to fix it.

CICS ISSUE SET is like setting a table. The computer program puts data in the right places. If the data is set correctly, the program can work properly. If the data isn't set correctly, the program has to fix it.

Just like you set tables, the computer program sets data!

Exercises

Exercise 1: Set Issuance

Write a CICS ISSUE SET command to issue a set operation.

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

Exercise 2: Set Processing

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

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

Quiz

Question 1

What is the primary purpose of CICS ISSUE SET?

A) To format setsB) To issue a set operationC) To validate setsD) To edit sets

Answer: B) To issue a set operation

Question 2

Which parameter specifies the response code?

A) RESPB) RESPONSEC) CODED) SET

Answer: A) RESP

CICS ISSUE SET - Issue Set

What is CICS ISSUE SET?

Command Syntax

Parameters Explained

RESP Parameters

Set Types

1. Basic Sets

2. Advanced Sets

3. Specialized Sets

Implementation Example

Set Processing

1. Set Preparation

2. Set Transmission

3. Output Management

Common Response Codes

Success Response Codes

Error Response Codes

Best Practices

1. Set Preparation

2. Error Handling

3. Performance Optimization

Explain It Like I'm 5 Years Old

Exercises

Exercise 1: Set Issuance

Exercise 2: Set Processing

Quiz

Question 1

Question 2

Related Concepts

CICS Set Processing

CICS User Management

CICS Output Processing

Related Pages