How to fix the Oracle error ORA-01792: maximum number of columns in a table or view is 1000?

In this post, you’ll learn more about the Oracle ErrorORA-01792: maximum number of columns in a table or view is 1000 with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01792: maximum number of columns in a table or view is 1000

Reason for the Error ORA-01792: maximum number of columns in a table or view is 1000

An attempt was made to create a table or view with more than 1000 columns, or to add more columns to a table or view which pushes it over the maximum allowable limit of 1000. Note that unused columns in the table are counted toward the 1000 column limit.

How to fix the Error ORA-01792: maximum number of columns in a table or view is 1000 ?

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

If the error is a result of a CREATE command, then reduce the number of columns in the command and resubmit. If the error is a result of an ALTER TABLE command, then there are two options: 1) If the table contained unused columns, remove them by executing ALTER TABLE DROP UNUSED COLUMNS before adding new columns; 2) Reduce the number of columns in the command and resubmit.