How to fix the Oracle error PGA-21402: error opening file string, fopen errno = number?

In this post, you’ll learn more about the Oracle ErrorPGA-21402: error opening file string, fopen errno = number with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PGA-21402: error opening file string, fopen errno = number

Reason for the Error PGA-21402: error opening file string, fopen errno = number

Cause: An error occurred opening the RRM enqueue file for writing. The error number from fopen is .

How to fix the Error PGA-21402: error opening file string, fopen errno = number ?

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

Action: Use the value to determine the cause of the problem and correct it before restarting the RRM.