What types of activity inquiry operations are available?

Inquiry types include status inquiry (active, inactive, suspended, terminated), attribute inquiry (activity, configuration, runtime, metadata), performance inquiry (metrics, resource usage, execution statistics, throughput), and relationship inquiry (parent, child, related, dependency).

How do I handle errors with CICS INQUIRE ACTIVITYID?

Always check the response code and implement appropriate error handling, including validation of activity existence, proper handling of inquiry errors, and authorization checks.

What is the purpose of activity ID inquiry?

Activity ID inquiry enables monitoring of activity status, retrieval of activity attributes, performance measurement, and relationship management for comprehensive activity oversight.

When should I use CICS INQUIRE ACTIVITYID?

Use this command when you need to check activity status, retrieve activity information, monitor activity performance, or manage activity relationships in CICS applications.

CICS INQUIRE ACTIVITYID - Activity ID Inquiry Operations

Q: What is CICS INQUIRE ACTIVITYID command used for?

CICS INQUIRE ACTIVITYID is used to query activity information, retrieve activity details, and manage activity inquiries in CICS applications for activity monitoring and management.

CICS INQUIRE ACTIVITYID provides activity identification inquiry capabilities in CICS environments. It enables programs to query activity information, retrieve activity details, and manage activity inquiries in CICS applications.

What is CICS INQUIRE ACTIVITYID?

CICS INQUIRE ACTIVITYID is a command that allows programs to query activity information, retrieve activity details, and manage activity inquiries in CICS environments. It provides activity identification capabilities, status checking, and inquiry management for CICS applications.

Command Syntax

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EXEC CICS INQUIRE ACTIVITYID
    [ACTIVITYID(activity-id)]
    [INTO(data-area)]
    [LENGTH(data-length)]
    [RESP(response-code)]
END-EXEC

Parameters

Optional Parameters

ACTIVITYID - Activity identifier to inquire about
INTO - Data area to receive activity information
LENGTH - Length of data to retrieve
RESP - Response code variable

Activity Inquiry Types

Status Inquiry

Query activity status information

• ACTIVE STATUS - Check if activity is currently active and running
• INACTIVE STATUS - Check if activity is currently inactive or stopped
• SUSPENDED STATUS - Check if activity is currently suspended or paused
• TERMINATED STATUS - Check if activity has been terminated or completed

Attribute Inquiry

Query activity attribute information

• ACTIVITY ATTRIBUTES - Retrieve detailed activity attribute information
• CONFIGURATION ATTRIBUTES - Retrieve activity configuration settings
• RUNTIME ATTRIBUTES - Retrieve current runtime activity attributes
• METADATA ATTRIBUTES - Retrieve activity metadata and descriptive information

Performance Inquiry

Query activity performance metrics

• PERFORMANCE METRICS - Retrieve activity performance measurement data
• RESOURCE USAGE - Retrieve activity resource consumption information
• EXECUTION STATISTICS - Retrieve activity execution timing and statistics
• THROUGHPUT METRICS - Retrieve activity throughput and processing rates

Relationship Inquiry

Query activity relationship information

• PARENT ACTIVITIES - Retrieve information about parent or controlling activities
• CHILD ACTIVITIES - Retrieve information about child or dependent activities
• RELATED ACTIVITIES - Retrieve information about related or associated activities
• DEPENDENCY RELATIONSHIPS - Retrieve information about activity dependencies and relationships

Programming Examples

Basic Activity Inquiry

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. INQUIRE01.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  ACTIVITY-ID      PIC X(8) VALUE 'ACT001'.
       01  DATA-AREA        PIC X(1000).
       01  DATA-LENGTH      PIC S9(8) COMP.
       01  RESPONSE-CODE    PIC S9(8) COMP.
       
       PROCEDURE DIVISION.
           EXEC CICS INQUIRE ACTIVITYID
               ACTIVITYID(ACTIVITY-ID)
               INTO(DATA-AREA)
               LENGTH(DATA-LENGTH)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           IF RESPONSE-CODE = DFHRESP(NORMAL)
               DISPLAY 'Activity inquiry successful'
               DISPLAY 'Activity ID: ' ACTIVITY-ID
               DISPLAY 'Data length: ' DATA-LENGTH
           ELSE
               DISPLAY 'Failed to inquire activity'
           END-IF
           
           EXEC CICS RETURN END-EXEC.

Activity Status Check

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. INQUIRE02.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  ACTIVITY-ID      PIC X(8) VALUE 'ACT002'.
       01  DATA-AREA        PIC X(1000).
       01  DATA-LENGTH      PIC S9(8) COMP.
       01  RESPONSE-CODE    PIC S9(8) COMP.
       01  ACTIVITY-STATUS  PIC X(10).
       
       PROCEDURE DIVISION.
           EXEC CICS INQUIRE ACTIVITYID
               ACTIVITYID(ACTIVITY-ID)
               INTO(DATA-AREA)
               LENGTH(DATA-LENGTH)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           IF RESPONSE-CODE = DFHRESP(NORMAL)
               MOVE DATA-AREA(1:10) TO ACTIVITY-STATUS
               DISPLAY 'Activity Status: ' ACTIVITY-STATUS
               
               EVALUATE ACTIVITY-STATUS
                   WHEN 'ACTIVE'
                       DISPLAY 'Activity is currently running'
                   WHEN 'INACTIVE'
                       DISPLAY 'Activity is currently stopped'
                   WHEN 'SUSPENDED'
                       DISPLAY 'Activity is currently suspended'
                   WHEN 'TERMINATED'
                       DISPLAY 'Activity has been terminated'
                   WHEN OTHER
                       DISPLAY 'Unknown activity status'
               END-EVALUATE
           ELSE
               DISPLAY 'Failed to check activity status'
           END-IF
           
           EXEC CICS RETURN END-EXEC.

Error Handling with Activity Inquiry

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. INQUIRE03.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  ACTIVITY-ID      PIC X(8) VALUE 'ACT003'.
       01  DATA-AREA        PIC X(1000).
       01  DATA-LENGTH      PIC S9(8) COMP.
       01  RESPONSE-CODE    PIC S9(8) COMP.
       
       PROCEDURE DIVISION.
           EXEC CICS INQUIRE ACTIVITYID
               ACTIVITYID(ACTIVITY-ID)
               INTO(DATA-AREA)
               LENGTH(DATA-LENGTH)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           EVALUATE RESPONSE-CODE
               WHEN DFHRESP(NORMAL)
                   DISPLAY 'Activity inquiry successful'
                   DISPLAY 'Activity ID: ' ACTIVITY-ID
               WHEN DFHRESP(NOTFND)
                   DISPLAY 'Activity not found'
               WHEN DFHRESP(INVREQ)
                   DISPLAY 'Invalid inquiry request'
               WHEN DFHRESP(ACTIVITYERR)
                   DISPLAY 'Activity-specific error occurred'
               WHEN DFHRESP(INQUIREERR)
                   DISPLAY 'Inquiry-specific error occurred'
               WHEN OTHER
                   DISPLAY 'Unexpected error occurred'
           END-EVALUATE
           
           EXEC CICS RETURN END-EXEC.

Activity Inquiry Management

Inquiry State Management

• Inquiry State Tracking - Track the current state of inquiry operations
• Inquiry State Maintenance - Maintain inquiry state across operations
• Inquiry Context Management - Manage inquiry context and environment
• Inquiry Session Management - Manage inquiry session lifecycle

Activity Management

• Activity Data Management - Manage activity data during inquiry operations
• Activity State Management - Manage activity state during inquiry operations
• Activity Metadata Management - Manage activity metadata during inquiry operations
• Activity Access Management - Manage activity access during inquiry operations

Query Management

• Query Optimization - Optimize inquiry queries for better performance
• Query Caching - Cache inquiry results for improved efficiency
• Query Validation - Validate inquiry requests before processing
• Query Monitoring - Monitor inquiry query performance and usage

Error Management

• Error Detection - Detect errors during inquiry operations
• Error Recovery - Recover from inquiry operation errors
• Error Reporting - Report inquiry operation errors
• Error Prevention - Prevent future inquiry operation errors

Error Handling

Common Response Codes

DFHRESP(NORMAL) - Activity inquiry successful
DFHRESP(NOTFND) - Activity not found
DFHRESP(INVREQ) - Invalid inquiry request
DFHRESP(ACTIVITYERR) - Activity-specific error
DFHRESP(INQUIREERR) - Inquiry-specific error
DFHRESP(AUTHORITYERR) - Authorization error

Performance Considerations

Inquiry Efficiency

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

Resource Impact

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

Best Practices

Activity ID Inquiry Best Practices

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

Explain It Like I'm 5 Years Old

Think of CICS INQUIRE ACTIVITYID like asking about a worker:

• Worker Name: "Which worker to ask about" - The activity ID
• Ask Questions: "Ask about the worker" - Inquire about activity
• Get Answers: "Get information about the worker" - Receive activity details
• Check Status: "See if worker is busy or free" - Check activity status
• Learn More: "Find out more about the worker" - Get detailed activity information

Exercises

Exercise 1: Basic Activity Inquiry

Create a program that inquires about activity information using INQUIRE ACTIVITYID.

Exercise 2: Activity Status Check

Write a program that checks the status of multiple activities using INQUIRE ACTIVITYID.

Exercise 3: Error Handling

Implement comprehensive error handling for activity inquiry failures and invalid activity IDs.

CICS INQUIRE ACTIVITYID - Activity ID Inquiry Operations

What is CICS INQUIRE ACTIVITYID?

Command Syntax

Parameters

Optional Parameters

Activity Inquiry Types

Status Inquiry

Attribute Inquiry

Performance Inquiry

Relationship Inquiry

Programming Examples

Basic Activity Inquiry

Activity Status Check

Error Handling with Activity Inquiry

Activity Inquiry Management

Inquiry State Management

Activity Management

Query Management

Error Management

Error Handling

Common Response Codes

Performance Considerations

Inquiry Efficiency

Resource Impact

Best Practices

Activity ID Inquiry Best Practices

Explain It Like I'm 5 Years Old

Exercises

Exercise 1: Basic Activity Inquiry

Exercise 2: Activity Status Check

Exercise 3: Error Handling

Related Concepts

Activity Management

Inquiry Operations

Activity Monitoring

Activity Processing

Error Handling

Related Pages