What types of timer inquiry operations are available?

Inquiry types include status inquiry (active, inactive, expired, cancelled), attribute inquiry (timer, duration, timing, metadata), performance inquiry (execution count, time, interval, metrics), and relationship inquiry (parent, child, related, dependency).

How do I handle errors with CICS INQUIRE TIMER?

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

What is the purpose of timer inquiry?

Timer inquiry enables monitoring of timer status, retrieval of timer attributes, performance measurement, and relationship management for comprehensive timer oversight.

When should I use CICS INQUIRE TIMER?

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

CICS INQUIRE TIMER - Timer Inquiry Operations

Q: What is CICS INQUIRE TIMER command used for?

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

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

What is CICS INQUIRE TIMER?

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

Command Syntax

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EXEC CICS INQUIRE TIMER
    [TIMERID(timer-id)]
    [INTO(data-area)]
    [LENGTH(data-length)]
    [RESP(response-code)]
END-EXEC

Parameters

Optional Parameters

TIMERID - Timer identifier to inquire about
INTO - Data area to receive timer information
LENGTH - Length of data to retrieve
RESP - Response code variable

Timer Inquiry Types

Status Inquiry

Query timer status information

• ACTIVE STATUS - Check if timer is currently active and running
• INACTIVE STATUS - Check if timer is currently inactive or stopped
• EXPIRED STATUS - Check if timer has expired and completed
• CANCELLED STATUS - Check if timer has been cancelled or terminated

Attribute Inquiry

Query timer attribute information

• TIMER ATTRIBUTES - Retrieve detailed timer attribute information
• DURATION ATTRIBUTES - Retrieve timer duration and interval information
• TIMING ATTRIBUTES - Retrieve timer timing and scheduling information
• METADATA ATTRIBUTES - Retrieve timer metadata and descriptive information

Performance Inquiry

Query timer performance metrics

• EXECUTION COUNT - Retrieve the number of times the timer has executed
• EXECUTION TIME - Retrieve the total execution time of the timer
• AVERAGE INTERVAL - Retrieve the average interval between timer executions
• PERFORMANCE METRICS - Retrieve comprehensive timer performance statistics

Relationship Inquiry

Query timer relationship information

• PARENT TIMERS - Retrieve information about parent or controlling timers
• CHILD TIMERS - Retrieve information about child or dependent timers
• RELATED TIMERS - Retrieve information about related or associated timers
• DEPENDENCY RELATIONSHIPS - Retrieve information about timer dependencies and relationships

Programming Examples

Basic Timer Inquiry

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. INQUIRE01.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  TIMER-ID         PIC X(8) VALUE 'TMR001'.
       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 TIMER
               TIMERID(TIMER-ID)
               INTO(DATA-AREA)
               LENGTH(DATA-LENGTH)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           IF RESPONSE-CODE = DFHRESP(NORMAL)
               DISPLAY 'Timer inquiry successful'
               DISPLAY 'Timer ID: ' TIMER-ID
               DISPLAY 'Data length: ' DATA-LENGTH
           ELSE
               DISPLAY 'Failed to inquire timer'
           END-IF
           
           EXEC CICS RETURN END-EXEC.

Timer Status Check

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. INQUIRE02.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  TIMER-ID         PIC X(8) VALUE 'TMR002'.
       01  DATA-AREA        PIC X(1000).
       01  DATA-LENGTH      PIC S9(8) COMP.
       01  RESPONSE-CODE    PIC S9(8) COMP.
       01  TIMER-STATUS     PIC X(10).
       
       PROCEDURE DIVISION.
           EXEC CICS INQUIRE TIMER
               TIMERID(TIMER-ID)
               INTO(DATA-AREA)
               LENGTH(DATA-LENGTH)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           IF RESPONSE-CODE = DFHRESP(NORMAL)
               MOVE DATA-AREA(1:10) TO TIMER-STATUS
               DISPLAY 'Timer Status: ' TIMER-STATUS
               
               EVALUATE TIMER-STATUS
                   WHEN 'ACTIVE'
                       DISPLAY 'Timer is currently active'
                   WHEN 'INACTIVE'
                       DISPLAY 'Timer is currently inactive'
                   WHEN 'EXPIRED'
                       DISPLAY 'Timer has expired'
                   WHEN 'CANCELLED'
                       DISPLAY 'Timer has been cancelled'
                   WHEN OTHER
                       DISPLAY 'Unknown timer status'
               END-EVALUATE
           ELSE
               DISPLAY 'Failed to check timer status'
           END-IF
           
           EXEC CICS RETURN END-EXEC.

Error Handling with Timer Inquiry

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. INQUIRE03.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  TIMER-ID         PIC X(8) VALUE 'TMR003'.
       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 TIMER
               TIMERID(TIMER-ID)
               INTO(DATA-AREA)
               LENGTH(DATA-LENGTH)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           EVALUATE RESPONSE-CODE
               WHEN DFHRESP(NORMAL)
                   DISPLAY 'Timer inquiry successful'
                   DISPLAY 'Timer ID: ' TIMER-ID
               WHEN DFHRESP(NOTFND)
                   DISPLAY 'Timer not found'
               WHEN DFHRESP(INVREQ)
                   DISPLAY 'Invalid inquiry request'
               WHEN DFHRESP(TIMERERR)
                   DISPLAY 'Timer-specific error occurred'
               WHEN DFHRESP(INQUIREERR)
                   DISPLAY 'Inquiry-specific error occurred'
               WHEN OTHER
                   DISPLAY 'Unexpected error occurred'
           END-EVALUATE
           
           EXEC CICS RETURN END-EXEC.

Timer 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

Timer Management

• Timer Data Management - Manage timer data during inquiry operations
• Timer State Management - Manage timer state during inquiry operations
• Timer Metadata Management - Manage timer metadata during inquiry operations
• Timer Access Management - Manage timer access during inquiry operations

Scheduling Management

• Schedule Monitoring - Monitor timer scheduling during inquiry operations
• Schedule Optimization - Optimize timer scheduling based on inquiry results
• Schedule Validation - Validate timer scheduling during inquiry operations
• Schedule Maintenance - Maintain timer scheduling after inquiry operations

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) - Timer inquiry successful
DFHRESP(NOTFND) - Timer not found
DFHRESP(INVREQ) - Invalid inquiry request
DFHRESP(TIMERERR) - Timer-specific error
DFHRESP(INQUIREERR) - Inquiry-specific error
DFHRESP(AUTHORITYERR) - Authorization error

Performance Considerations

Inquiry Efficiency

• Optimize inquiry operations - Use appropriate inquiry methods for different timer 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

Timer 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 TIMER like asking about a clock:

• Clock Name: "Which clock to ask about" - The timer ID
• Ask Questions: "Ask about the clock" - Inquire about timer
• Get Answers: "Get information about the clock" - Receive timer details
• Check Status: "See if clock is running or stopped" - Check timer status
• Learn More: "Find out more about the clock" - Get detailed timer information

Exercises

Exercise 1: Basic Timer Inquiry

Create a program that inquires about timer information using INQUIRE TIMER.

Exercise 2: Timer Status Check

Write a program that checks the status of multiple timers using INQUIRE TIMER.

Exercise 3: Error Handling

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

CICS INQUIRE TIMER - Timer Inquiry Operations

What is CICS INQUIRE TIMER?

Command Syntax

Parameters

Optional Parameters

Timer Inquiry Types

Status Inquiry

Attribute Inquiry

Performance Inquiry

Relationship Inquiry

Programming Examples

Basic Timer Inquiry

Timer Status Check

Error Handling with Timer Inquiry

Timer Inquiry Management

Inquiry State Management

Timer Management

Scheduling Management

Error Management

Error Handling

Common Response Codes

Performance Considerations

Inquiry Efficiency

Resource Impact

Best Practices

Timer Inquiry Best Practices

Explain It Like I'm 5 Years Old

Exercises

Exercise 1: Basic Timer Inquiry

Exercise 2: Timer Status Check

Exercise 3: Error Handling

Related Concepts

Timer Management

Inquiry Operations

Timer Scheduling

Timer Processing

Error Handling

Related Pages