RE: 10g upgrade survey

  • From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
  • To: <oracledba.williams@xxxxxxxxx>, "Oracle Discussion List" <oracle-l@xxxxxxxxxxxxx>
  • Date: Mon, 19 Mar 2007 16:39:13 -0700

I'm reviving this topic because I happen to have a real-life need to do
another 10g upgrade and in planning I came up with a couple more
benefits of using exp/imp:
1) You can retain your old version of the database, completely
unchanged, as a fallback in case of problems during/after the upgrade.
2) You can go directly from any version to 10g, rather than having to be
on,, or, which are the prerequisites
for a direct upgrade to 10.2.  In my case, I've currently got about 50
databases all running on - do I want to go through the trouble
of patching them all to just as a stepping stone to 10g, or just
go straight to 10g via exp/imp?  I think I'll go for the shorter path.
Also, I found these comments from the 10.2 upgrade guide

Export/Import Benefits

Upgrading using Export/Import offers the following benefits:

*       Defragments the data - you can compress the imported data to
improve performance.

*       Restructures the database - you can create new tablespaces or
modify existing tables, tablespaces, or partitions to be populated by
imported data.

*       Enables the copying of specified database objects or users - you
can import only the objects, users, and other items that you wish.

*       Serves as a backup archive - you can use a full database export
as an archive of the current database.



From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Dennis Williams
Sent: Monday, March 05, 2007 6:31 PM
To: Oracle Discussion List
Subject: Re: 10g upgrade survey


Here are the results as I tally them so far.

Favorite upgrade method: Manual by a whisker (favored by 7 vs. 6 DBAs,
as I count them, double counting some people who favored both methods)

A close runner-up was Exp/Imp.

Naturally if you have a large database and a short downtime window,
exp/imp may not work for you.

One person stated he had used dbua successfully many times. Three others
stated they were bitten by dbua.

Thanks for everyone's input.

Dennis Williams

Privileged/Confidential Information may be contained in this message or 
attachments hereto. Please advise immediately if you or your employer do not 
consent to Internet email for messages of this kind. Opinions, conclusions and 
other information in this message that do not relate to the official business 
of this company shall be understood as neither given nor endorsed by it.

Other related posts: