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CICS ENDBROWSE ACTIVITY - Activity Browse Termination

CICS ENDBROWSE ACTIVITY provides activity browse termination capabilities in CICS environments. It enables programs to terminate activity browse operations, clean up browse resources, and end activity browsing sessions in CICS applications.

What is CICS ENDBROWSE ACTIVITY?

CICS ENDBROWSE ACTIVITY is a command that allows programs to terminate activity browse operations, clean up browse resources, and end activity browsing sessions in CICS environments. It provides browse termination capabilities, resource cleanup, and session management for CICS applications.

Command Syntax

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EXEC CICS ENDBROWSE ACTIVITY
    [REQID(request-id)]
    [RESP(response-code)]
END-EXEC

Parameters

Optional Parameters

  • REQID - Request identifier for the browse operation
  • RESP - Response code variable

Browse Termination Types

Normal Termination

Standard termination with proper cleanup

  • • GRACEFUL TERMINATION - Browse operations terminated after completing current operations
  • • SAFE TERMINATION - Browse operations terminated only when safe to do so
  • • ORDERED TERMINATION - Browse operations terminated in proper dependency order
  • • VALIDATED TERMINATION - Browse operations terminated only after validation checks

Immediate Termination

Immediate termination without waiting

  • • IMMEDIATE TERMINATION - Browse operations terminated immediately without waiting
  • • EMERGENCY TERMINATION - Browse operations terminated in emergency situations
  • • ABRUPT TERMINATION - Browse operations terminated abruptly without cleanup
  • • OVERRIDE TERMINATION - Browse operations terminated despite warnings or errors

Conditional Termination

Termination based on specific conditions

  • • CONDITIONAL TERMINATION - Browse operations terminated only when conditions are met
  • • STATE-BASED TERMINATION - Browse operations terminated based on their current state
  • • DEPENDENCY TERMINATION - Browse operations terminated based on dependency status
  • • RESOURCE TERMINATION - Browse operations terminated based on resource availability

Batch Termination

Termination of multiple browse operations

  • • BATCH TERMINATION - Multiple browse operations terminated in a single operation
  • • GROUP TERMINATION - Related browse operations terminated as a group
  • • CATEGORY TERMINATION - Browse operations terminated by category or type
  • • PATTERN TERMINATION - Browse operations terminated based on naming patterns

Programming Examples

Basic Browse Termination

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. ENDBROWSE01.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  REQUEST-ID      PIC X(8) VALUE 'REQ001'.
       01  RESPONSE-CODE   PIC S9(8) COMP.
       
       PROCEDURE DIVISION.
           EXEC CICS ENDBROWSE ACTIVITY
               REQID(REQUEST-ID)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           IF RESPONSE-CODE = DFHRESP(NORMAL)
               DISPLAY 'Activity browse terminated successfully'
           ELSE
               DISPLAY 'Failed to terminate activity browse'
           END-IF
           
           EXEC CICS RETURN END-EXEC.

Browse Termination Without Request ID

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. ENDBROWSE02.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  RESPONSE-CODE   PIC S9(8) COMP.
       
       PROCEDURE DIVISION.
           EXEC CICS ENDBROWSE ACTIVITY
               RESP(RESPONSE-CODE)
           END-EXEC
           
           IF RESPONSE-CODE = DFHRESP(NORMAL)
               DISPLAY 'All activity browse operations terminated'
           ELSE
               DISPLAY 'Failed to terminate activity browse operations'
           END-IF
           
           EXEC CICS RETURN END-EXEC.

Error Handling with Browse Termination

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. ENDBROWSE03.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  REQUEST-ID      PIC X(8) VALUE 'REQ003'.
       01  RESPONSE-CODE   PIC S9(8) COMP.
       
       PROCEDURE DIVISION.
           EXEC CICS ENDBROWSE ACTIVITY
               REQID(REQUEST-ID)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           EVALUATE RESPONSE-CODE
               WHEN DFHRESP(NORMAL)
                   DISPLAY 'Activity browse terminated successfully'
                   DISPLAY 'Request ID: ' REQUEST-ID
               WHEN DFHRESP(NOTFND)
                   DISPLAY 'Browse operation not found'
               WHEN DFHRESP(INVREQ)
                   DISPLAY 'Invalid termination request'
               WHEN DFHRESP(ACTIVITYERR)
                   DISPLAY 'Activity-specific error occurred'
               WHEN DFHRESP(ENDBROWSEERR)
                   DISPLAY 'End browse-specific error occurred'
               WHEN OTHER
                   DISPLAY 'Unexpected error occurred'
           END-EVALUATE
           
           EXEC CICS RETURN END-EXEC.

Browse Cleanup

Resource Cleanup

  • • Memory Cleanup - Release memory allocated to the browse operation
  • • Storage Cleanup - Release storage space used by the browse operation
  • • Buffer Cleanup - Clean up buffers used by the browse operation
  • • Cache Cleanup - Clear cache entries for the browse operation

Session Cleanup

  • • Session Termination - Terminate the browse session properly
  • • Connection Cleanup - Clean up connections used by the browse operation
  • • State Cleanup - Reset browse state to initial values
  • • Context Cleanup - Clear browse context and variables

Data Cleanup

  • • Browse Data Removal - Remove all data associated with the browse operation
  • • Metadata Cleanup - Clean up browse metadata and attributes
  • • Index Cleanup - Remove indexes associated with the browse operation
  • • Reference Cleanup - Clear references to the browse data

System Cleanup

  • • System References - Remove system references to the browse operation
  • • Registry Cleanup - Remove browse operation from system registry
  • • Monitoring Cleanup - Remove browse operation from monitoring systems
  • • Audit Cleanup - Update audit logs after browse termination

Error Handling

Common Response Codes

  • DFHRESP(NORMAL) - Activity browse terminated successfully
  • DFHRESP(NOTFND) - Browse operation not found
  • DFHRESP(INVREQ) - Invalid termination request
  • DFHRESP(ACTIVITYERR) - Activity-specific error
  • DFHRESP(ENDBROWSEERR) - End browse-specific error
  • DFHRESP(CLEANUPERR) - Cleanup-specific error

Performance Considerations

Termination Efficiency

  • • Optimize termination operations - Use appropriate termination methods for different browse types
  • • Minimize termination overhead - Reduce the computational cost of termination operations
  • • Use efficient termination patterns - Implement termination strategies that minimize resource usage
  • • Monitor termination performance - Track the performance impact of termination operations

Resource Impact

  • • Monitor resource usage - Track how termination operations consume system resources
  • • Optimize resource cleanup - Ensure efficient cleanup of resources during termination
  • • Manage resource recovery - Properly recover resources after termination operations
  • • Track resource utilization - Monitor the overall resource consumption patterns

Best Practices

Activity Browse Termination Best Practices

  • • Always check response codes
  • • Use appropriate termination parameters
  • • Implement proper error handling
  • • Ensure proper resource cleanup
  • • Validate browse state before termination
  • • Optimize termination operations
  • • Clean up resources properly

Explain It Like I'm 5 Years Old

Think of CICS ENDBROWSE ACTIVITY like finishing looking through a book:

  • • Book Name: "Which book you were looking through" - The request ID
  • • Close the Book: "Put the book away" - End the browse
  • • Clean Up: "Put everything back where it belongs" - Resource cleanup
  • • All Done: "Finished looking through the book" - Browse terminated

Exercises

Exercise 1: Basic Browse Termination

Create a program that terminates a basic activity browse operation.

Exercise 2: Multiple Browse Termination

Write a program that terminates multiple activity browse operations.

Exercise 3: Error Handling

Implement comprehensive error handling for browse termination failures and cleanup errors.

Related Concepts

Activity Management

Managing system activities

Browse Operations

Managing browse operations

Resource Cleanup

Cleaning up system resources

Session Management

Managing browse sessions

Error Handling

Managing termination errors