How to fix the Oracle error RMAN-12008: could not locate backup piece string?

In this post, you’ll learn more about the Oracle ErrorRMAN-12008: could not locate backup piece string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

RMAN-12008: could not locate backup piece string

Reason for the Error RMAN-12008: could not locate backup piece string

There was at least 1 backup set that could not be accessed by any of the allocated channels.

How to fix the Error RMAN-12008: could not locate backup piece string ?

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

Allocate additional channels on other nodes of the cluster