Re: RMAN Duplication for Migration and Archived Logs

No I really only need to copy objects and pl/sql from 3 schemas. I do need to recreate other users and roles, but that is easily done via a script that I've written a few years ago anyway.

So streams will update sequence objects? Does it also do changes to PL/SQL objects like packages and triggers? I'll have to resume my overdue reading.

Right now here are the three viable paths for this migration as I see it.

1. Oracle Streams
2. Oracle Data Pump
3. RMAN Duplication

Path #1 is the one I'm virtually completely unfamiliar with at this point in time. Path #2 is appealing to me because it would give me the opportunity to do some object reorganization and be a little bit smarter with the database creation. Path #3 is the worst-case scenario -- one that I know will work and have already scripted (I do it for all of my dev instance restores).

D-Day for the migration is just under 3 weeks. So the learning curve for #1 becomes a negative factor, but it seems to greatly reduce the downtime if I can make it happen. But, there may be a lot of other positives that make it an obvious stand-out choice, once I RTFM.

Don.

On 8/7/07, Robert Freeman <robertgfreeman_at_yahoo.com> wrote:
> In 10.2? I am pretty sure streams can apply DDL for a sequence creation
> can't it? I don't have a streams setup handy now to test this, but I'm sure
> that the last one I did was capturing create sequence DDL and applying it.
> In 10.2 capture will capture all DDL except about 6 different statements.
>
> I agree about SYS objects, but sequences are not all owned by SYS.
>
> RF
>
>
> Robert G. Freeman
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> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org
> [mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Kirtikumar Deshpande
> Sent: Tuesday, August 07, 2007 8:21 PM
> To: don_at_seiler.us; Alex Gorbachev
> Cc: oracle-l
> Subject: Re: RMAN Duplication for Migration and Archived Logs
>
>
> Hi Don,
>
> The answer to (2) is: No. Streams can't replicate sys,system,ctxsys(?)
> owned objects.
> You will have to deal with Sequences on your own.
> As for 32-bit to 64-bit Streams replication, I had tested Oracle9i (32-bit)
> to
> Oracle10gR1 (64-bit) without any problems.
>
> Regards,
>
> - Kirti
>
> --- Don Seiler <don_at_seiler.us> wrote:
>
> > A friend also suggested that I might be able to do something similar
> > using Oracle Streams Replication to minimize downtime.
> >
> > I've only just begun the Streams reading, but thought I'd ask some
> > questions to get a jump-start:
> >
> > 1. Are there any known hang-ups going from 32-bit to 64-bit?
> > 2. Does Oracle Streams include sequences, or does it just do table
> > DDL/DML changes?
> > 3. Does Oracle Streams propagate VPD changes?
> >
> > If any of these are "no", then I think it's out. One not-so-appalling
> > option would be to do as I did when I migrated from HPUX to RHEL:
> > create a new database, recreate pl/sql, tables and indexes (with
> > better organization than I have currently), have a perl script to
> > recreate users and privileges. The appeal here is that the large bulk
> > (90%) of my ~1TB database is read-only on that day and could be
> > migrated (probably via datapump) well ahead of the downtime window.
> > Then during the downtime window I'd run a script to recreate the
> > sequences and VPD settings, then datapump the OLTP stuffs over to get
> > the DML for the day.
> >
> > What do you fine folks think? Doing it the hard way?
> >
> > Don.
> >
> > On 8/2/07, Don Seiler <don_at_seiler.us> wrote:
> > > On 8/1/07, Alex Gorbachev <ag_at_oracloid.com> wrote:
> > > > The simple approach is to create a standby database. I think it should
> > > > work 32 bit -> 64 bit as well.
> > >
> > > I just found this in Section 2.3.1 of the Data Guard Concepts and
> > > Administration Guide [1]:
> > >
> > > "All members of a Data Guard configuration must run an Oracle image
> > > that is built for the same platform.
> > >
> > > For example, this means a Data Guard configuration with a primary
> > > database on a 32-bit Linux on Intel system can have a standby database
> > > that is configured on a 32-bit Linux on Intel system. However, a
> > > primary database on a 64-bit HP-UX system can also be configured with
> > > a standby database on a 32-bit HP-UX system, as long as both servers
> > > are running 32-bit images."
> > >
> > > Has anyone proven this wrong? Are my standby plans ruined?
> > >
> > > [1]
> http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/standby.htm#i
> 72053
> > >
> > > --
> > > Don Seiler
> > > oracle: http://ora.seiler.us
> > > ultimate: http://www.mufc.us
> > >
> >
> >
> > --
> > Don Seiler
> > oracle: http://ora.seiler.us
> > ultimate: http://www.mufc.us
> > --
> > http://www.freelists.org/webpage/oracle-l
> >
> >
> >
>
>
>
>
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-- 
Don Seiler
oracle: http://ora.seiler.us
ultimate: http://www.mufc.us
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