Well, that doesn't sound like the hostname, it sounds like the IP address.

Ideally, all references on your database server should always reference the host name not the IP address. In that instance, then we you change the network details at the OS level, the database will unaware and will run just fine.

In your case, it would be worth doing that now, so there are no references to "10.5.6.212" in any Oracle configuration file.

If the host *name* is changing, then you'd need to change occurrences of that throughout your config. Typical places will be:

- your init.ora files and possibly the spfile
- tnsnames.ora / sqlnet.ora / listener.ora
- any *client* versions of those files

Depending on what other software you are running, other files may be impacted as well.

You would make these changes with the database *down*