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CICS MOVE - Move

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

What is CICS MOVE?

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

Command Syntax

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EXEC CICS MOVE
    [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 move 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

Move Types

1. Basic Moves

  • Basic moves: Standard move operations that handle simple moving without special formatting
  • Mapped moves: Move operations that use predefined field mappings to structure move data
  • Unmapped moves: Raw move operations that handle unstructured moving without predefined field mappings
  • Custom moves: Specialized move operations designed for specific application requirements

2. Advanced Moves

  • Advanced moves: Complex move operations that handle sophisticated moving processing and validation
  • Secure moves: Move operations that include encryption and security features for sensitive moving
  • Encrypted moves: Move operations that automatically encrypt move data
  • Compressed moves: Move operations that handle compressed moving streams and automatically compress move data

3. Specialized Moves

  • Specialized moves: Move operations tailored for specific protocols or communication methods
  • High-performance moves: Optimized move operations designed for maximum throughput and efficiency
  • Low-latency moves: Move operations optimized for minimal delay and real-time processing requirements
  • High-throughput moves: Move operations designed to handle large volumes of moving 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.
    * Move operation
    EXEC CICS MOVE
        RESP(WS-RESPONSE)
        RESP2(WS-RESPONSE2)
    END-EXEC.
    
    IF WS-RESPONSE NOT EQUAL DFHRESP(NORMAL)
        EXEC CICS WRITE OPERATOR
            TEXT('MOVE command failed')
        END-EXEC
        EXEC CICS RETURN END-EXEC
    END-IF.
    
    * Move operation completed successfully
    * Continue processing

Move Processing

1. Move Preparation

Move preparation includes:

  • Move validation - ensuring the move operation is properly configured and authorized
  • Move formatting - preparing data structures and buffers for move data
  • Move encoding - setting up proper character encoding and data transformation
  • Move processing - initializing the move operation and preparing for moving

2. Move Transmission

Move transmission includes:

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

Common Response Codes

Success Response Codes

  • NORMAL (0): Move operation completed successfully - moving was completed without errors
  • MOVE (4): Move operation completed - operation completed with move-specific status

Error Response Codes

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

Best Practices

1. Move Preparation

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

2. Error Handling

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

Explain It Like I'm 5 Years Old

Imagine you're moving toys from one box to another:

When you want to move toys from one box to another, you take each toy and put it in the new box. If you move all the toys, the new box has all the toys. If you don't move all the toys, the new box doesn't have all the toys.

CICS MOVE is like moving toys from one box to another. The computer program takes each piece of data and puts it in a new place. If it moves all the data, the new place has all the data. If it doesn't move all the data, the new place doesn't have all the data.

Just like you move toys from one box to another, the computer program moves data from one place to another!

Exercises

Exercise 1: Move Operation

Write a CICS MOVE command to perform a move operation.

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

Exercise 2: Move Processing

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

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

Quiz

Question 1

What is the primary purpose of CICS MOVE?

Answer: B) To provide move management capabilities

Question 2

Which parameter specifies the response code?

Answer: A) RESP

Related Concepts

CICS Move Processing

Move processing and output in CICS

CICS User Management

User management and user interaction in CICS

CICS Output Processing

Output processing and move display in CICS