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CICS CHANGE PASSWORD - Change Password

CICS CHANGE PASSWORD changes a user password, enabling password management and output processing in CICS environments. It provides efficient password changing capabilities for CICS applications.

What is CICS CHANGE PASSWORD?

CICS CHANGE PASSWORD changes a user password, enabling password management and output processing. It provides efficient password changing capabilities, allowing applications to change user passwords.

Command Syntax

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EXEC CICS CHANGE PASSWORD
    USERID(user-id)
    PASSWORD(new-password)
    [RESP(response-code)]
    [RESP2(response-code-2)]
END-EXEC.

Parameters Explained

USERID Parameter

Specifies the user ID to change password for:

  • Must be a valid user ID
  • Identifies specific user
  • Required for all CHANGE PASSWORD operations
  • Must be active user

PASSWORD Parameter

Specifies the new password:

  • Must be a valid password
  • Contains new password
  • Required for all CHANGE PASSWORD operations
  • Must meet password requirements

RESP Parameters

Response codes returned by the command:

  • RESP: Primary response code
  • RESP2: Secondary response code
  • Always check these codes for command success
  • Handle command failures appropriately

Password Types

1. Basic Passwords

  • Basic passwords: Basic passwords
  • Mapped passwords: Mapped passwords
  • Unmapped passwords: Unmapped passwords
  • Custom passwords: Custom passwords

2. Advanced Passwords

  • Advanced passwords: Advanced passwords
  • Secure passwords: Secure passwords
  • Encrypted passwords: Encrypted passwords
  • Compressed passwords: Compressed passwords

3. Specialized Passwords

  • Specialized passwords: Specialized passwords
  • High-performance passwords: High-performance passwords
  • Low-latency passwords: Low-latency passwords
  • High-throughput passwords: High-throughput passwords

Implementation Example

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WORKING-STORAGE SECTION.
01 WS-RESPONSE            PIC S9(8) COMP.
01 WS-RESPONSE2           PIC S9(8) COMP.
01 WS-USER-ID             PIC X(8) VALUE 'USER001'.
01 WS-NEW-PASSWORD        PIC X(8) VALUE 'NEWPASS1'.
 
PROCEDURE DIVISION.
    * Change user password
    EXEC CICS CHANGE PASSWORD
        USERID(WS-USER-ID)
        PASSWORD(WS-NEW-PASSWORD)
        RESP(WS-RESPONSE)
        RESP2(WS-RESPONSE2)
    END-EXEC.
    
    IF WS-RESPONSE NOT EQUAL DFHRESP(NORMAL)
        EXEC CICS WRITE OPERATOR
            TEXT('CHANGE PASSWORD command failed')
        END-EXEC
        EXEC CICS RETURN END-EXEC
    END-IF.
    
    * Password changed successfully
    * Continue processing

Password Processing

1. Password Preparation

Password preparation includes:

  • Password validation
  • Password formatting
  • Password encoding
  • Password processing

2. Password Transmission

Password transmission includes:

  • Password routing
  • Password delivery
  • Transmission confirmation
  • Error handling

3. Output Management

Output management includes:

  • User management
  • Output formatting
  • User experience
  • Performance optimization

Common Response Codes

Success Response Codes

  • NORMAL (0): Password changed successfully
  • CHANGE (4): Password changed

Error Response Codes

  • INVREQ (16): Invalid request
  • NOTFND (20): User not found
  • LENGERR (22): Length error
  • CHANGE (24): Change error

Best Practices

1. Password Preparation

  • Prepare password appropriately
  • Validate password content
  • Handle different password types
  • Ensure password integrity

2. Error Handling

  • Check all response codes
  • Handle change failures
  • Implement retry logic
  • Log error conditions

3. Performance Optimization

  • Minimize password changing
  • Use efficient password formats
  • Optimize user updates
  • Manage user resources

Explain It Like I'm 5 Years Old

Imagine you're changing the lock on your door:

When you want to change the lock on your door, you take out the old lock and put in a new lock. The new lock has a new key that only you know, so only you can open the door.

CICS CHANGE PASSWORD is like changing the lock on your door. The computer program takes out the old password and puts in a new password. The new password is something only you know, so only you can use it to get into your account.

Just like you change the lock on your door to keep it safe, the computer program changes your password to keep your account safe!

Exercises

Exercise 1: Password Changing

Write a CICS CHANGE PASSWORD command to change a user password.

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EXEC CICS CHANGE PASSWORD
    USERID(WS-USER-ID)
    PASSWORD(WS-NEW-PASSWORD)
    RESP(WS-RESPONSE)
    RESP2(WS-RESPONSE2)
END-EXEC.

Exercise 2: Password Processing

How would you implement comprehensive password processing that handles different password types and requirements?

Answer: Identify different password types and appropriate handling, implement password validation and encoding, handle different password types and capabilities, implement proper error handling for password changing failures, optimize password changing for performance, and maintain password integrity throughout the process.

Quiz

Question 1

What is the primary purpose of CICS CHANGE PASSWORD?

Answer: B) To change a user password

Question 2

Which parameter specifies the user ID to change password for?

Answer: A) USERID

Related Concepts

CICS Password Processing

Password processing and output in CICS

CICS User Management

User management and user interaction in CICS

CICS Output Processing

Output processing and password display in CICS