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CICS STARTBROWSE PROCESS - Process Browse Initialization

CICS STARTBROWSE PROCESS provides process browse initialization capabilities in CICS environments. It enables programs to initialize process browse operations, manage process browsing, and handle process browse sessions in CICS applications.

What is CICS STARTBROWSE PROCESS?

CICS STARTBROWSE PROCESS is a command that allows programs to initialize process browse operations, manage process browsing, and handle process browse sessions in CICS environments. It provides process browse initialization capabilities, browse management, and session handling for CICS applications.

Command Syntax

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EXEC CICS STARTBROWSE PROCESS [REQID(request-id)] [PROCESSID(process-id)] [RESP(response-code)] END-EXEC

Parameters

Required Parameters

  • REQID - Request identifier for the browse operation

Optional Parameters

  • PROCESSID - Process identifier to start browsing from
  • RESP - Response code variable

Process Browse Initialization Types

Sequential Browse

Initialize sequential process browsing

  • FORWARD BROWSE - Initialize forward sequential browsing through processes
  • BACKWARD BROWSE - Initialize backward sequential browsing through processes
  • BIDIRECTIONAL BROWSE - Initialize bidirectional browsing through processes
  • LINEAR BROWSE - Initialize linear browsing through processes in order

Process Type Browse

Initialize process type-based browsing

  • TYPE-SPECIFIC BROWSE - Initialize browsing through processes of specific types
  • MULTI-TYPE BROWSE - Initialize browsing across multiple process types
  • TYPE-GROUP BROWSE - Initialize browsing through process type groups
  • TYPE-PATTERN BROWSE - Initialize browsing through processes matching type patterns

Conditional Browse

Initialize conditional process browsing

  • STATUS-BASED BROWSE - Initialize browsing based on process status conditions
  • PRIORITY-BASED BROWSE - Initialize browsing based on process priority conditions
  • RESOURCE-BASED BROWSE - Initialize browsing based on process resource conditions
  • FILTERED BROWSE - Initialize browsing with specific filter conditions

Batch Browse

Initialize batch process browsing

  • BATCH BROWSE - Initialize browsing through multiple processes in batch
  • GROUP BROWSE - Initialize browsing through related process groups
  • CATEGORY BROWSE - Initialize browsing through process categories
  • PATTERN BROWSE - Initialize browsing through processes matching patterns

Programming Examples

Basic Process Browse Initialization

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IDENTIFICATION DIVISION. PROGRAM-ID. STARTBROWSE01. DATA DIVISION. WORKING-STORAGE SECTION. 01 REQUEST-ID PIC X(8) VALUE 'REQ001'. 01 PROCESS-ID PIC X(8) VALUE 'PROC001'. 01 RESPONSE-CODE PIC S9(8) COMP. PROCEDURE DIVISION. EXEC CICS STARTBROWSE PROCESS REQID(REQUEST-ID) PROCESSID(PROCESS-ID) RESP(RESPONSE-CODE) END-EXEC IF RESPONSE-CODE = DFHRESP(NORMAL) DISPLAY 'Process browse initialized successfully' DISPLAY 'Request ID: ' REQUEST-ID DISPLAY 'Starting Process ID: ' PROCESS-ID ELSE DISPLAY 'Failed to initialize process browse' END-IF EXEC CICS RETURN END-EXEC.

Process Type-Based Browse

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IDENTIFICATION DIVISION. PROGRAM-ID. STARTBROWSE02. DATA DIVISION. WORKING-STORAGE SECTION. 01 REQUEST-ID PIC X(8) VALUE 'REQ002'. 01 PROCESS-ID PIC X(8) VALUE 'PROC002'. 01 RESPONSE-CODE PIC S9(8) COMP. 01 PROCESS-COUNT PIC 9(3) VALUE 0. PROCEDURE DIVISION. EXEC CICS STARTBROWSE PROCESS REQID(REQUEST-ID) PROCESSID(PROCESS-ID) RESP(RESPONSE-CODE) END-EXEC IF RESPONSE-CODE = DFHRESP(NORMAL) DISPLAY 'Process type-based browse initialized' DISPLAY 'Request ID: ' REQUEST-ID DISPLAY 'Starting Process ID: ' PROCESS-ID PERFORM PROCESS-PROCESSES UNTIL RESPONSE-CODE NOT = DFHRESP(NORMAL) ELSE DISPLAY 'Failed to initialize process type-based browse' END-IF EXEC CICS RETURN END-EXEC. PROCESS-PROCESSES. EXEC CICS GETNEXT PROCESS REQID(REQUEST-ID) PROCESSID(PROCESS-ID) RESP(RESPONSE-CODE) END-EXEC IF RESPONSE-CODE = DFHRESP(NORMAL) ADD 1 TO PROCESS-COUNT DISPLAY 'Processing Process ' PROCESS-COUNT ': ' PROCESS-ID END-IF.

Error Handling with Process Browse

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IDENTIFICATION DIVISION. PROGRAM-ID. STARTBROWSE03. DATA DIVISION. WORKING-STORAGE SECTION. 01 REQUEST-ID PIC X(8) VALUE 'REQ003'. 01 PROCESS-ID PIC X(8) VALUE 'PROC003'. 01 RESPONSE-CODE PIC S9(8) COMP. PROCEDURE DIVISION. EXEC CICS STARTBROWSE PROCESS REQID(REQUEST-ID) PROCESSID(PROCESS-ID) RESP(RESPONSE-CODE) END-EXEC EVALUATE RESPONSE-CODE WHEN DFHRESP(NORMAL) DISPLAY 'Process browse initialized successfully' DISPLAY 'Request ID: ' REQUEST-ID DISPLAY 'Starting Process ID: ' PROCESS-ID WHEN DFHRESP(INVREQ) DISPLAY 'Invalid browse request' WHEN DFHRESP(PROCESSERR) DISPLAY 'Process-specific error occurred' WHEN DFHRESP(BROWSEERR) DISPLAY 'Browse-specific error occurred' WHEN DFHRESP(AUTHORITYERR) DISPLAY 'Authorization error occurred' WHEN OTHER DISPLAY 'Unexpected error occurred' END-EVALUATE EXEC CICS RETURN END-EXEC.

Process Browse Management

Browse Session Management

  • Session Initialization - Initialize browse sessions and establish browse context
  • Session State Management - Manage browse session state and maintain session continuity
  • Session Context Management - Manage browse session context and environment
  • Session Lifecycle Management - Manage browse session lifecycle from initialization to termination

Process Management

  • Process Data Management - Manage process data during browse operations
  • Process State Management - Manage process state during browse operations
  • Process Metadata Management - Manage process metadata during browse operations
  • Process Access Management - Manage process access during browse operations

Handler Management

  • Handler Registration - Register process handlers during browse operations
  • Handler Execution - Execute process handlers during browse operations
  • Handler Cleanup - Clean up process handlers after browse operations
  • Handler Monitoring - Monitor process handler performance during browse operations

Error Management

  • Error Detection - Detect errors during browse initialization
  • Error Recovery - Recover from browse initialization errors
  • Error Reporting - Report browse initialization errors
  • Error Prevention - Prevent future browse initialization errors

Error Handling

Common Response Codes

  • DFHRESP(NORMAL) - Process browse initialized successfully
  • DFHRESP(INVREQ) - Invalid browse request
  • DFHRESP(PROCESSERR) - Process-specific error
  • DFHRESP(BROWSEERR) - Browse-specific error
  • DFHRESP(AUTHORITYERR) - Authorization error
  • DFHRESP(RESOURCEERR) - Resource error

Performance Considerations

Browse Efficiency

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

Resource Impact

  • Monitor resource usage - Track how browse operations consume system resources
  • Optimize resource allocation - Ensure efficient allocation of resources for browsing
  • Manage resource cleanup - Properly clean up resources after browse operations
  • Track resource utilization - Monitor the overall resource consumption patterns

Best Practices

Process Browse Initialization Best Practices

  • • Always check response codes
  • • Use appropriate browse parameters
  • • Implement proper error handling
  • • Ensure proper browse session management
  • • Validate browse operations
  • • Optimize browse operations
  • • Clean up resources properly

Explain It Like I'm 5 Years Old

Think of CICS STARTBROWSE PROCESS like starting to look through a list of workers:

  • List Name: "Which list of workers to look through" - The request ID
  • Start Looking: "Start looking through the list" - Initialize browse
  • Pick Starting Worker: "Pick which worker to start looking from" - Set starting process
  • Ready to Look: "Ready to look through workers" - Browse initialized
  • Keep Looking: "Keep looking at more workers" - Continue browsing

Exercises

Exercise 1: Basic Process Browse

Create a program that initializes process browsing using STARTBROWSE PROCESS.

Exercise 2: Process Type-Based Browse

Write a program that initializes process type-based browsing with specific process types.

Exercise 3: Error Handling

Implement comprehensive error handling for process browse initialization failures.