Oracle Parent Key Not Found Error

Contents How To Find Parent Table In Oracle Parent Key Not Found Exception In Oracle Sql Error: 2291, Sqlstate: 23000

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ORA-02291: integrity constraint violated-parent ora-02291 how to fix key not found tips Oracle Error Tips by Burleson Consulting (S. Karam) The Oracle docs note this on the ora-02291 error: ORA-02291: integrity constraint (string.string)

How To Find Parent Table In Oracle

violated - parent key not found Cause: A foreign key value has no matching primary key value. Action: Delete the foreign key or add a matching primary key. For an insert statement, this ORA-02291 error is common when you are trying to insert a child without a matching parent, as defined by parent key and foreign key a foreign key constraint. In that case, you need to add the parent row to the table and then re-insert your child table row.See the dba_constraints view to find the parent table.To fully understand [primary and foreign key constraints, see the book Easy Oracle Jumpstart, to explain these concepts: Burleson is the American Team Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals. Feel free to ask questions on our Oracle forum. Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise. All legitimate Oracle experts publish their Oracle qualifications. Errata? Oracle technology is changing and we strive to update our BC Oracle support information. If you find an error or have a suggestion for improving our content, we would appreciate your feedback. Just e-mail: and i

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Parent Key Not Found Exception In Oracle

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Sql Error: 2291, Sqlstate: 23000

community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up violated - parent key not found error up vote 0 down vote favorite I have the http://www.dba-oracle.com/t_ora_02291_integrity_constraint_string_string_violated_parent_key_not_found.htm following error appearing: INSERT INTO GroupMembers VALUES ('Goldfrat', 'Simon Palm') * ERROR at line 1: ORA-02291: integrity constraint (SHAHA1.IAM_IS_GROUP_FK) violated - parent key not found The constraint in the GroupMembers table is: CONSTRAINT iam_is_group_fk FOREIGN KEY(is_group) REFERENCES Members(group_name) The Members Table looks like this: CREATE TABLE Members ( group_name VARCHAR2(40), CONSTRAINT g_id_pk PRIMARY KEY(group_name), CONSTRAINT m_group_name_fk FOREIGN KEY(group_name) REFERENCES Artist(artistic_name)); All of the tables are created fine until it comes to http://stackoverflow.com/questions/13518246/violated-parent-key-not-found-error creating the GroupMembers table. Anyone have any ideas? I've been scratching for quite a while. sql database oracle share|improve this question edited Oct 28 '13 at 11:06 Kiquenet 5,0822487148 asked Nov 22 '12 at 18:23 AkshaiShah 75641834 I'm scratching for the error,too. I've disabled the foreign constraint and did some insert and delete actions. After I updated, I could not enable this foreign constraint. It said ORA-02298: cannot validate (PRODUSR.SYS_C0037867) - parent keys not found. But I checked many times and still cannot find out any records not in parent table. –user3572072 Apr 25 '14 at 8:11 add a comment| 3 Answers 3 active oldest votes up vote 2 down vote accepted The problem is that CONSTRAINT iam_is_group_fk FOREIGN KEY(is_group) REFERENCES Members(group_name); references the table Members on the group_name field. This means that the field is_group on the table GroupMembers must have an identical value on the table Members and group_name field. In my opinion this is bad practice. First of all you should have a primary key field on the table GroupMembers. You should not store the names of the group members in the table GroupMembers, but their corresponding id from the table Members. Also the table Members, should look something like this: CREATE TABLE Members (

MySQL MariaDB PostgreSQL SQLite MS Office Excel Access Word Web Development HTML CSS Color Picker Languages C Language More ASCII Table Linux UNIX Java Clipart Techie Humor https://www.techonthenet.com/oracle/errors/ora02291.php Advertisement Oracle Basics ALIASES AND AND & OR BETWEEN COMPARISON OPERATORS DELETE http://plsql.globinch.com/ora-02291-integrity-constraint-violated-parent-key-not-found-2/ DISTINCT EXISTS FROM GROUP BY HAVING IN INSERT INSERT ALL INTERSECT IS NOT NULL IS NULL JOIN LIKE MINUS NOT OR ORDER BY PIVOT REGEXP_LIKE SELECT SUBQUERY TRUNCATE UNION UNION ALL UPDATE WHERE Oracle Advanced Oracle Cursors Oracle Exception Handling Oracle Foreign Keys Oracle Loops/Conditionals Oracle Transactions Oracle parent key Triggers String/Char Functions Numeric/Math Functions Date/Time Functions Conversion Functions Analytic Functions Advanced Functions Oracle / PLSQL: ORA-02291 Error Message Learn the cause and how to resolve the ORA-02291 error message in Oracle. Description When you encounter an ORA-02291 error, the following error message will appear: ORA-02291: integrity constraint violated - parent key not found Cause You tried to reference parent key not a table using a unique or primary key, but the columns that you listed did not match the primary key, or a primary key does not exist for this table. Resolution The option(s) to resolve this Oracle error are: Option #1 This error commonly occurs when you have a parent-child relationship established between two tables through a foreign key. You then have tried to insert a value into the child table, but the corresponding value does not exist in the parent table. To correct this problem, you need to insert the value into the parent table first and then you can insert the corresponding value into the child table. For example, if you had created the following foreign key (parent-child relationship). CREATE TABLE supplier ( supplier_id numeric(10) not null, supplier_name varchar2(50) not null, contact_name varchar2(50), CONSTRAINT supplier_pk PRIMARY KEY (supplier_id) ); CREATE TABLE products ( product_id numeric(10) not null, supplier_id numeric(10) >not null, CONSTRAINT fk_supplier FOREIGN KEY (supplier_id) REFERENCES supplier (supplier_id) ); Then you try inserting into the products table as follows: INSERT INTO products (product_id, supplier_id) VALUES (1001

9 ORA-02291: integrity constraint violated - parent key not found TweetSumoMe Tweet ORA-02291: integrity constraint violated - parent key not found error occurs when we try to insert a row in a child table with a foreign key constraint and the related foreign key data is missing from parent table. Let us create a scenario which causes ORA-02291 error. Let us create an EMPLOYEE table which holds the employee information like name ,id and salary. Here emp_id is the primary key column. SQL> create table EMPLOYEE( name VARCHAR2(50), emp_id NUMBER, salary NUMBER(8,2), CONSTRAINT EMPLOYEE_ID_PK PRIMARY KEY (emp_id)); Table created Now create an Employee address table which holds the address details of the employees.The address table is linked to EMPLOYEE table through the foreign key emp_id; SQL> create table EMPLOYEE_ADDRESS( address varchar2(200), emp_id number, CONSTRAINT EMP_ADD_FK FOREIGN KEY (emp_id)REFERENCES EMPLOYEE(emp_id)); Table created Now let us insert one record in EMPLOYEE table. SQL> insert into EMPLOYEE values(' ABCD',1,12345); 1 row inserted Now let us add address for this particular employee in EMPLOYEE_ADDRESS table. SQL> insert into EMPLOYEE_ADDRESS values('abcd efgh',1); 1 row inserted Now while entering the data in EMPLOYEE_ADDRESS table the data should be already present in EMPLOYEE table.Otherwise foreign key violation will result. SQL> insert into EMPLOYEE_ADDRESS values('abcd efgh',8); ORA-02291: integrity constraint violated - parent key not found Related Articles,Oracle/PLSQL: Foreign Keys | Oracle Referential Integrity Oracle/PLSQL: Composite Primary Key Oracle/PLSQL: Primary Key and Composite Primary Key ALTER TABLE to ADD PRIMARY KEY in Oracle. Technorati Tags: ORA-02291, integrity constraint violated, parent key not found Be Sociable, Share! Tweet Posted by Binu George Error Codes, Oracle, SQL Error, SQL Tips, Tables Subscribe to RSS feed Pingback: Oracle Tables: Create Table as Select | SQL and PLSQL() Pingback: Oracle/PLSQL: Create table with foreign key constraint | SQL and PLSQL() Pingback: Best Tips On Getting Pregnant() Fadi I have correct values in the two parent an