How to fix the Oracle error ORA-30079: cannot alter database timezone when database has TIMESTAMP WITH LOCAL TIME ZONE columns?

In this post, you’ll learn more about the Oracle ErrorORA-30079: cannot alter database timezone when database has TIMESTAMP WITH LOCAL TIME ZONE columns with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30079: cannot alter database timezone when database has TIMESTAMP WITH LOCAL TIME ZONE columns

Reason for the Error ORA-30079: cannot alter database timezone when database has TIMESTAMP WITH LOCAL TIME ZONE columns

An attempt was made to alter database timezone with TIMESTAMP WITH LOCAL TIME ZONE column in the database.

How to fix the Error ORA-30079: cannot alter database timezone when database has TIMESTAMP WITH LOCAL TIME ZONE columns ?

You can fix this error in Oracle by following the below steps

Either do not alter database timezone or first drop all the TIMESTAMP WITH LOCAL TIME ZONE columns.