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Network Export / Import
“Network export”
- Server “A” receives network export request
- Retrieves data from server “B”
- Writes data to dump file on server “A”
“Network import”
- Server “A” receives network import request
- Retrieves data from server “B” (exports)
- Writes data to Server “A”
- No intermediate “dump” files involved!
- Can request source data at flashback time or SCN
Notes:
Datapump’s network operations are another enhancement over original import / export – especially network import.
Network export uses the specified database link to initiate a datapump export on a remote server, then writes the data to a dump file on the local server.
Even more cool is network import which is sort of an export and import rolled into one. This gets data from a remote server – again via a database link over the network – and writes this to the local server – without ever writing the data to an intermediate dump file.