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CICS ENDBROWSE CONTAINER (BTS) - BTS Container Browse Termination

CICS ENDBROWSE CONTAINER (BTS) provides Business Transaction Services container browse termination capabilities in CICS environments. It enables programs to terminate BTS container browse operations, clean up browse resources, and end container browsing sessions in CICS applications.

What is CICS ENDBROWSE CONTAINER (BTS)?

CICS ENDBROWSE CONTAINER (BTS) is a command that allows programs to terminate Business Transaction Services container browse operations, clean up browse resources, and end container browsing sessions in CICS environments. It provides BTS container browse termination capabilities, resource cleanup, and session management for CICS applications.

Command Syntax

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EXEC CICS ENDBROWSE CONTAINER
    [CHANNEL(channel-name)]
    [REQID(request-id)]
    [RESP(response-code)]
END-EXEC

Parameters

Optional Parameters

  • CHANNEL - Channel name containing the containers
  • REQID - Request identifier for the browse operation
  • RESP - Response code variable

BTS Container Browse Termination Types

Normal Termination

Standard termination with proper cleanup

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

Immediate Termination

Immediate termination without waiting

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

Channel Termination

Termination based on channel operations

  • • CHANNEL TERMINATION - Container browse operations terminated for specific channels
  • • MULTI-CHANNEL TERMINATION - Container browse operations terminated across multiple channels
  • • CHANNEL-GROUP TERMINATION - Container browse operations terminated for channel groups
  • • CHANNEL-PATTERN TERMINATION - Container browse operations terminated based on channel patterns

Batch Termination

Termination of multiple container browse operations

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

Programming Examples

Basic Container Browse Termination

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. ENDBROWSE01.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  CHANNEL-NAME    PIC X(20) VALUE 'MAIN_CHANNEL'.
       01  REQUEST-ID      PIC X(8) VALUE 'REQ001'.
       01  RESPONSE-CODE   PIC S9(8) COMP.
       
       PROCEDURE DIVISION.
           EXEC CICS ENDBROWSE CONTAINER
               CHANNEL(CHANNEL-NAME)
               REQID(REQUEST-ID)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           IF RESPONSE-CODE = DFHRESP(NORMAL)
               DISPLAY 'BTS container browse terminated successfully'
           ELSE
               DISPLAY 'Failed to terminate BTS container browse'
           END-IF
           
           EXEC CICS RETURN END-EXEC.

Channel-Specific Browse Termination

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. ENDBROWSE02.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  CHANNEL-NAME    PIC X(20) VALUE 'PROCESS_CHANNEL'.
       01  RESPONSE-CODE   PIC S9(8) COMP.
       
       PROCEDURE DIVISION.
           EXEC CICS ENDBROWSE CONTAINER
               CHANNEL(CHANNEL-NAME)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           IF RESPONSE-CODE = DFHRESP(NORMAL)
               DISPLAY 'Channel container browse terminated'
               DISPLAY 'Channel: ' CHANNEL-NAME
           ELSE
               DISPLAY 'Failed to terminate channel container browse'
           END-IF
           
           EXEC CICS RETURN END-EXEC.

Error Handling with Container Browse Termination

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. ENDBROWSE03.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  CHANNEL-NAME    PIC X(20) VALUE 'MESSAGE_CHANNEL'.
       01  REQUEST-ID      PIC X(8) VALUE 'REQ003'.
       01  RESPONSE-CODE   PIC S9(8) COMP.
       
       PROCEDURE DIVISION.
           EXEC CICS ENDBROWSE CONTAINER
               CHANNEL(CHANNEL-NAME)
               REQID(REQUEST-ID)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           EVALUATE RESPONSE-CODE
               WHEN DFHRESP(NORMAL)
                   DISPLAY 'BTS container browse terminated successfully'
                   DISPLAY 'Channel: ' CHANNEL-NAME
                   DISPLAY 'Request ID: ' REQUEST-ID
               WHEN DFHRESP(NOTFND)
                   DISPLAY 'Browse operation not found'
               WHEN DFHRESP(INVREQ)
                   DISPLAY 'Invalid termination request'
               WHEN DFHRESP(CONTAINERERR)
                   DISPLAY 'Container-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.

BTS Container Browse Cleanup

Resource Cleanup

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

Channel Cleanup

  • • Channel References - Remove references to the browse operation in channels
  • • Channel Metadata - Update channel metadata after browse termination
  • • Channel Index - Update channel indexes after browse termination
  • • Channel State - Update channel state after browse cleanup

Container Cleanup

  • • Container Data Removal - Remove all data associated with the browse operation
  • • Container Metadata Cleanup - Clean up container metadata and attributes
  • • Container Index Cleanup - Remove indexes associated with the browse operation
  • • Container Reference Cleanup - Clear references to the container 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) - BTS container browse terminated successfully
  • DFHRESP(NOTFND) - Browse operation not found
  • DFHRESP(INVREQ) - Invalid termination request
  • DFHRESP(CONTAINERERR) - Container-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 container 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

BTS Container 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 CONTAINER (BTS) like finishing looking through boxes:

  • • Room Name: "Which room the boxes are in" - The channel name
  • • Box Name: "Which box you were looking through" - The request ID
  • • Close the Box: "Put the box away" - End the browse
  • • Clean Up: "Put everything back where it belongs" - Resource cleanup
  • • All Done: "Finished looking through the boxes" - Browse terminated

Exercises

Exercise 1: Basic Container Browse Termination

Create a program that terminates a basic BTS container browse operation.

Exercise 2: Channel-Specific Termination

Write a program that terminates container browse operations for specific channels.

Exercise 3: Error Handling

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

Related Concepts

BTS Management

Managing Business Transaction Services

Container Management

Managing BTS containers

Browse Operations

Managing browse operations

Channel Management

Managing BTS channels

Error Handling

Managing termination errors