Re: database clone:

This paper is rather old, and I'm not sure some of the points are still valid, such as multiple tablespace creation. I haven't tried it though, maybe someone already knows?

As for the fast export/import, there's another method that's been ignored in this thread, and that is to dump your tables to files that can be loaded via sql loader.

There are commercial utilities for this, some free ones, or you can roll your own. The complexity of this will depend on the type of data in your database. LONG's or LOB's of large sizes present their own challenges, but they are not insurmountable.

I prefer to roll my own, using Perl of course. I've done this with C as well, though I can't say I liked it.

The time spent doing this can easily be less than the time evaluating a product, getting approval to purchase it, getting the PO from finance and then installing, configuring and learning to use it.

You must be comfortable with programming to take this approach, and it seems that a large percentage of DBA's are not. Maybe that's why this approach is not taken more often.

Anyway, just my $0.02.

Jared

On Monday 11 March 2002 11:43, Gery PANNEQUIN wrote:
> Have a look at a very interesting paper from Nigel Noble (Churchill
> Insurance).
> Its title is : Techniques For Fast Database Re-Organization
> This paper may be found at this link (not at top) :
> http://www.doug.org/news/doug596.html
>
> Regards.
> ---------------------------------------------------------------
> Gery Pannequin - Independant Consultant
> ---------------------------------------------------------------
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> Sent: Monday, March 11, 2002 6:28 PM
>
> > Your thinking is incorrect. You CAN NOT share AIX and Solaris Oracle
> > datafiles. They are platform specific in architecture. I'm currently
> > moving almost 200 databases from sun to AIX, what that I could just
> > move the datafiles.
> >
> > RF
> >
> > Robert G. Freeman - Oracle8i OCP
> > Oracle DBA Technical Lead
> > CSX Midtier Database Administration
> >
> > The Cigarette Smoking Man: Anyone who can appease a man's conscience can
> > take his freedom away from him.
> >
> >
> >
> > -----Original Message-----
> > Sent: Monday, March 11, 2002 12:09 PM
> > To: Multiple recipients of list ORACLE-L
> >
> >
> > Hi DBAs.
> >
> > Thanks all your reply. I am still thinking it is possible to use backup
>
> file
>
> > or cp files. It is hard to exp/imp on a large system with 300GB.
> >
> > Mitchell
> >
> >
> > ----- Original Message -----
> > To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> > Sent: Monday, March 11, 2002 11:53 AM
> >
> > > mitchell_at_comnet.ca wrote:
> > > > Hi DBAs:
> > > >
> > > >What is the best way to clone large oracle database ( 8.0.5, 300g)
> > > > from
> >
> > aix
> >
> > > >4.3 o to Sun Soloris (2.8).
> > > >Any idea, articles, experience?
> > > >
> > > >
> > > >thanks in advance.
> > > >
> > > >Mitchell
> > >
> > > exp from aix, install, create the database and the tablespaces on sun,
> > > then imp.
> > >
> > >
> > > --
> > > --
> > > Bill "Shrek" Thater ORACLE DBA
> > > bthater2_at_netscape.net
> > > -----------------------------------------------------------------------
> > >- You gotta program like you don't need the money,
> > > You gotta compile like you'll never get hurt,
> > > You gotta run like there's nobody watching,
> > > It's gotta come from the heart if you want it to work.
> > > -----------------------------------------------------------------------
> > >- "Books won't stay banned - Ideas won't go to jail." - Alfred
> >
> > Whitney Griswold
> >
> > > --
> > > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > > --
> > > Author: bill thater
> > > INET: bthater2_at_netscape.net
> > >
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> > Author: mitchell
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Jared Still
  INET: jkstill_at_cybcon.com

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