Oracle7 Server Utilities
Exporting LONGs
On import, LONGs require contiguous memory. Therefore, it is not always possible to export LONG columns from one operating system and import them on another system. Even on the same system, memory limitations may make it impossible to import very large LONG columns that were successfully exported on that system.
Warning: LONG columns can be up to 2 gigabytes in length. Because they can be exported in sections, Oracle LONGs are always exportable.