In this post, you’ll learn more about the Oracle ErrorKUP-04108: unable to reread file string with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
KUP-04108: unable to reread file string
Reason for the Error KUP-04108: unable to reread file string
The query that is executing requires that a data source for an external table be read multiple times. However, the data source is a sequential device that cannot be reread. Examples of this type of data source is a tape or pipe.
How to fix the Error KUP-04108: unable to reread file string ?
You can fix this error in Oracle by following the below steps
There are a few ways around this problem. One is to rewrite the query so that the external table is referenced only once. Another option is to move the data source to a rereadable device such as a disk file. A third option is to load the data for the external table into a temporary table and change the query to reference the temporary table.