Specifies whether to overwrite a preexisting dump file.
Syntax and Description
REUSE_DUMPFILES=[YES | NO]
Normally, Data Pump Export will return an error if you specify a dump file name that already exists. The
REUSE_DUMPFILES parameter allows you to override that behavior and reuse a dump file name. For example, if you performed an export and specified
hr.dmp would be overwritten if it already existed. Its previous contents would be lost and it would contain data for the current export instead.
The following export operation creates a dump file named
enc1.dmp, even if a dump file with that name already exists.
> expdp hr DIRECTORY=dpump_dir1 DUMPFILE=enc1.dmp TABLES=employees REUSE_DUMPFILES=YES