ORA-01407: cannot update (string) to NULL

I got ” ORA-01407: cannot update (string) to NULL ”  error in Oracle database.

 

ORA-01407: cannot update (string) to NULL

 

Details of error are as follows.

ORA-01407 cannot update (string) to NULL

Cause: An attempt was made to update a table column "USER"."TABLE"."COLUMN" with a NULL value.

Action: Retry the operation with a value other than NULL.

 

 

cannot update (string) to NULL

This ORA-01407 errors are related with the attempt was made to update a table column “USER”.”TABLE”.”COLUMN” with a NULL value.

To solve this error, Retry the operation with a value other than NULL.

Or you can drop the NOT NULL constraint on the related table.

 

For example, you have created the following table.

CREATE TABLE employee
( id number not null,
name varchar2(50) not null 
);

 

You can not update the name or id column with the NULL value, because you will get this error.

UPDATE employee  SET name = null WHERE id = 1453;

 

You can update it with any value as follows.

UPDATE employee  SET name = 'MEHMET' WHERE id = 1453;

 

 

Do you want to learn Oracle Database for Beginners, then read the following articles.

Oracle Tutorial | Oracle Database Tutorials for Beginners ( Junior Oracle DBA )

 

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About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.

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