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How to "copy" database to a clean oracle installation ?

Posted on 2009-12-22
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Last Modified: 2013-12-19
i have an oracle server that is dying.
I mirrored the OS from that server and installed on a new server.
Now I have a server that has oracle installation on it ( 8i)
Now I need to "import" the database that is on drive D:
I tried mirroring ...but not working...
So I guess I need to "re-create" the whole database and restore it.
Can u gurus help me ?

I have a dmp file that is being run every 6 hours, so I could get a new one...
but how to "re-create" the users...the structure...etc... before using the import command ?
thanks a lot
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Question by:ammounpierre
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Steve Wales earned 2000 total points
ID: 26110088
One way is to do this:

From your current database issue: alter database backup controlfile to trace;

This will give you a text file in your user_dump_dest.   This will containt a CREATE CONTROLFILE statement (possibly two, can't recall off the top of my head if Oracle 8 gave you two or one.).

Recreate your filesystem structure on the new server.   Easiest if everything goes into the same place as before but not critical.

Shutdown your current database (assuming you can get an outage window).
Copy all the files (database files, redo log files, control file, init.ora) over to the new server in the same place.

Taking the file we saved in the first step, edit it so that the first line reads: (replacing DBNAME with your database name):

CREATE CONTROLFILE REUSE DATABASE "DBNAME" RESETLOGS ARCHIVELOG

Save the script and run it.

If everything is in the same place and the database was shut down cleanly before copying, the database should be recreated.

You also may need to execute: ALTER DATABASE OPEN RESETLOGS at the end to get the database to open.

That's a fairly straightforward way of dealing with a straight up database copy between servers (if your downtime windows and overall size of the database permit it) and much faster than an import export.  It will also maintain your structures, users, stored procedures, triggers etc.
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by:ammounpierre
ID: 26110551
This is what I did , please advice..

I mirrored the C:\ drive (BOOT) where Oracle is installed (containing Windows REG...etc...)
I shutdown the oracle DB , and stopped all the services...
and copied the Whole D:\ Drive where all CTL and LOGs and DBF files are.

Now I will try the following:
-Restore the C:\drive (image )
_copy all files to the new D:\drive using the same structure.
hope it works...
Anything else I should do ?
thanks
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Expert Comment

by:Steve Wales
ID: 26142984
Make sure that the paths in your init.ora and your create control file are all pointing to the correct files....

See how you go.
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