how to do a full db migration using data pump (db running in noarchive mode)
Posted on 2006-07-18
I have to servers (10g rel2) on two different locations. I want a certain instance, which is actually in production, to be fully copied onto an other server for testing/developement purposes.
I've never done such thing before (I've been a plain pl/sql developer so far).
The production instance is running in NOARCHIVELOG mode.
My first idea was to
- stop the PROD database,
- make a full dump using the new datapump export utilyty (it is said to be more efficient than the older export import utility) from linux command line (as I figured out, only some simple parameter file has to be assembled)
- restart the PROD server
- copy the files to the TEST server (I guess via FTP)
- somehow import it with the corresponding datapump util
- It would be desireable not to stop the PROD server if it was not necessary. According to my understanding it will be necessary to stop it, since it's running in NOARCHIVE mode and you wont get a constistent dump while it's running.
Or maybe it could be possible to make a full dump (for a dev/test copy) while running?
- Also I saw in the documentation that there's an API (dbms_datapump or something like that), with which you can copy one database instance to an other database (without command line and file copy).
Do you think this could be as good as my original plan (or even better) regarding performance?
- Any comment, hint, trick, possible errors regarding such a migration are welcomed.
- Also it was beautiful if you could provide me with some sample code just to save me some time.
Thanks for your help