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CICS SEND PAGE - Send Page

CICS SEND PAGE provides send page management capabilities, enabling send page processing and output processing in CICS environments. It provides efficient send page capabilities for CICS applications.

What is CICS SEND PAGE?

CICS SEND PAGE provides send page management capabilities, enabling send page processing and output processing. It provides efficient send page capabilities, allowing applications to manage send page operations.

Command Syntax

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EXEC CICS SEND PAGE [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 send page 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

Send Page Types

1. Basic Send Pages

  • Basic send pages: Standard send page operations that handle simple sending without special formatting
  • Mapped send pages: Send page operations that use predefined field mappings to structure send page data
  • Unmapped send pages: Raw send page operations that handle unstructured sending without predefined field mappings
  • Custom send pages: Specialized send page operations designed for specific application requirements

2. Advanced Send Pages

  • Advanced send pages: Complex send page operations that handle sophisticated sending processing and validation
  • Secure send pages: Send page operations that include encryption and security features for sensitive sending
  • Encrypted send pages: Send page operations that automatically encrypt send page data
  • Compressed send pages: Send page operations that handle compressed sending streams and automatically compress send page data

3. Specialized Send Pages

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

Send Page Processing

1. Send Page Preparation

Send page preparation includes:

  • Send page validation - ensuring the send page operation is properly configured and authorized
  • Send page formatting - preparing data structures and buffers for send page data
  • Send page encoding - setting up proper character encoding and data transformation
  • Send page processing - initializing the send page operation and preparing for sending

2. Send Page Transmission

Send page transmission includes:

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

Common Response Codes

Success Response Codes

  • NORMAL (0): Send page operation completed successfully - sending was completed without errors
  • SEND (4): Send page operation completed - operation completed with send page-specific status

Error Response Codes

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

Best Practices

1. Send Page Preparation

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

2. Error Handling

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

Explain It Like I'm 5 Years Old

Imagine you're sending a page:

When you want to send a page, you write it down and send it. If you send it, it goes to the person. If you don't send it, it stays with you.

CICS SEND PAGE is like sending a page. The computer program writes data and sends it. If it sends it, it goes to the right place. If it doesn't send it, it stays with the program.

Just like you send pages, the computer program sends page data!

Exercises

Exercise 1: Send Page Operation

Write a CICS SEND PAGE command to perform a send page operation.

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

Exercise 2: Send Page Processing

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

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

Quiz

Question 1

What is the primary purpose of CICS SEND PAGE?

Answer: B) To provide send page management capabilities

Question 2

Which parameter specifies the response code?

Answer: A) RESP