-25342: Error restoring table <table_name>; table exists but source table schema and target table schema are different 

Explanation:

Error in the Loader command for importing data.

The specified table already exists in the database instance. The Loader has established that the structures of the source and target table are different. This means that the data cannot be imported.

User Response:

Change the target table so that the schemas match. Execute the command again.