How to export large amount of data using sql developer - Oracle

Question

I want to upload some data from UAT DB to DEV DB. When I try to do this from Export function in SQL Developer, I got an error File C

Answer 1

I was having this error when exporting database in insert format, selecting loader format on the 1st Export wizard screen fixed the issue.

This is probably because insert format creates a single SQL script with DDL and data as insert statements. So all the database is dumped in a single script file.

loader option produces multiple files: control file, data file, and sql files. And there are separate files for each table. As a result the export will consist of hundreds of files and no one file will reach the size limit.

This may not however work with single tables with very large amounts of data as that table's data file would hit the limit.