In this post, you’ll learn more about the Oracle ErrorORA-31679: Table data object string has long columns, and longs can not be loaded/unloaded using a network link with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-31679: Table data object string has long columns, and longs can not be loaded/unloaded using a network link
Reason for the Error ORA-31679: Table data object string has long columns, and longs can not be loaded/unloaded using a network link
Table data objects that contain long columns can not be selected over a network link.
How to fix the Error ORA-31679: Table data object string has long columns, and longs can not be loaded/unloaded using a network link ?
You can fix this error in Oracle by following the below steps
Export this table to a file and then import the same table from the file.