• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to secondary sidebar

Oracle PL/SQL Tutorial

  • Home
  • Joins
    • Inner Join
    • Left Join
    • Right Join
    • Self Join
    • Full Join
  • Constraints
    • Add primary key
    • Add constraint foreign key
    • Drop constraint key
    • Enable a foreign key
    • Disable foreign key
  • Cursors
  • Triggers
  • Indexes
    • Create index oracle
    • Alter index oracle
    • Drop index oracle
    • List all indexes from Oracle database
  • Exceptions
  • Interview Questions

ORA-02431: cannot disable constraint

ORA-02431: cannot disable constraint

Oracle PL/SQL error message: ORA-02431: cannot disable constraint.

Cause:

The named constraint does not exist for this table.

Solution:

Check that a constraint exists before trying to disable it.




Example:

ALTER TABLE test
DISABLE CONSTRAINT constraint_name;

Output:

ORA-02431: cannot disable constraint

Check constraint

SELECT OWNER, CONSTRAINT_NAME, STATUS
FROM user_constraints
WHERE table_name = 'TEST';

Filed Under: PL/SQL

Primary Sidebar



PL/SQL tutorial

  • PL/SQL Interview Questions and Answers
  • Sys_Connect_By_Path
  • Rank
  • Dense_Rank
  • Listagg
  • ORA-01950 no privileges on tablespace USERS
  • ORA-01017: invalid username/password logon denied

Secondary Sidebar

PL/SQL Tutorial

  • PL/SQL Tutorial
  • PL/SQL Functions
  • PL/SQL Select Query
  • PL/SQL Table Joins
  • PL/SQL Cursors
  • PL/SQL Collections and Records
  • PL/SQL Triggers
  • PL/SQL Views
  • PL/SQL Exception Handling
  • PL/SQL Sequential Control
  • PL/SQL Iterative Control
  • PL/SQL Control Structures
  • PL/SQL Procedure
  • PL/SQL Function
  • PL/SQL Data Types
  • PL/SQL Indexes
  • PL/SQL Constraints
  • PL/SQL %ROWTYPE Attribute
  • PL/SQL %TYPE Attribute
  • PL/SQL Variables
  • PL/SQL Anonymous block
  • PL/SQL Operators
  • PL/SQL Delete
  • PL/SQL Update
  • PL/SQL Insert
  • PL/SQL Select

Copyright  2013 - 2019 PL/SQL Tutorial

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Cookie settingsACCEPT
Privacy & Cookies Policy

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience.
Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience.

Necessary Always Enabled

Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.

Non-necessary

Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.