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CICS ISSUE END - Issue End

CICS ISSUE END issues an end, enabling end management and output processing in CICS environments. It provides efficient end capabilities for CICS applications.

What is CICS ISSUE END?

CICS ISSUE END issues an end, enabling end management and output processing. It provides efficient end capabilities, allowing applications to issue ends.

Command Syntax

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

Parameters Explained

RESP Parameters

Response codes returned by the command:

  • RESP: Primary response code
  • RESP2: Secondary response code
  • Always check these codes for command success
  • Handle command failures appropriately

End Types

1. Basic Ends

  • Basic ends: Basic ends
  • Mapped ends: Mapped ends
  • Unmapped ends: Unmapped ends
  • Custom ends: Custom ends

2. Advanced Ends

  • Advanced ends: Advanced ends
  • Secure ends: Secure ends
  • Encrypted ends: Encrypted ends
  • Compressed ends: Compressed ends

3. Specialized Ends

  • Specialized ends: Specialized ends
  • High-performance ends: High-performance ends
  • Low-latency ends: Low-latency ends
  • High-throughput ends: High-throughput ends

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 end EXEC CICS ISSUE END RESP(WS-RESPONSE) RESP2(WS-RESPONSE2) END-EXEC. IF WS-RESPONSE NOT EQUAL DFHRESP(NORMAL) EXEC CICS WRITE OPERATOR TEXT('ISSUE END command failed') END-EXEC EXEC CICS RETURN END-EXEC END-IF. * End issued successfully * Continue processing

End Processing

1. End Preparation

End preparation includes:

  • End validation
  • End formatting
  • End encoding
  • End processing

2. End Transmission

End transmission includes:

  • End routing
  • End delivery
  • Transmission confirmation
  • Error handling

3. Output Management

Output management includes:

  • User management
  • Output formatting
  • User experience
  • Performance optimization

Common Response Codes

Success Response Codes

  • NORMAL (0): End issued successfully
  • END (4): End issued

Error Response Codes

  • INVREQ (16): Invalid request
  • NOTFND (20): Resource not found
  • LENGERR (22): Length error
  • END (24): End error

Best Practices

1. End Preparation

  • Prepare end appropriately
  • Validate end content
  • Handle different end types
  • Ensure end integrity

2. Error Handling

  • Check all response codes
  • Handle end failures
  • Implement retry logic
  • Log error conditions

3. Performance Optimization

  • Minimize end operations
  • Use efficient end formats
  • Optimize user updates
  • Manage user resources

Explain It Like I'm 5 Years Old

Imagine you're ending something:

When you want to end something, you say "end" and the thing ends. If the thing ends, you can do something else. If the thing doesn't end, you have to try again.

CICS ISSUE END is like ending something. The computer program says "end" and the thing ends. If the thing ends, the program can do something else. If the thing doesn't end, the program has to try again.

Just like you end things, the computer program ends things!

Exercises

Exercise 1: End Issuance

Write a CICS ISSUE END command to issue an end.

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

Exercise 2: End Processing

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

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

Quiz

Question 1

What is the primary purpose of CICS ISSUE END?

Answer: B) To issue an end

Question 2

Which parameter specifies the response code?

Answer: A) RESP