How to fix the Oracle error ORA-01259: unable to delete datafile string?

In this post, you’ll learn more about the Oracle ErrorORA-01259: unable to delete datafile string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01259: unable to delete datafile string

Reason for the Error ORA-01259: unable to delete datafile string

A DROP TABLESPACE INCLUDING CONTENTS AND DATAFILES operation was not able to delete a datafile in the tablespace.

How to fix the Error ORA-01259: unable to delete datafile string ?

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

Subsequent errors describe the operating system error that prevented the file deletion. Fix the problem, if possible, and manually purge the file.