Re: 10g upgrade survey

Dennis,

We almost always use option 3, for a variety of reasons, depending on the database in question:
- Have to pre-create the database in advance of a cut-over of a Production
DB to the new version.
- Want to take advantage of a new feature that would be difficult or
impossible to retrofit to an upgraded database.
- Moving a database from, say, 32bit Linux to 64bit Linux, and upgrading
at the same time.

We also had a problem after an upgrade of an HPUX database from 8.1.7.4 to 9.2.0.4. Right after the upgrade, our 3rd Party Financials app, accumulated about 60,000 views. After we dropped those nasty things, that DB's Data Dictionary was somehow damaged - did not shrink. Queries against DBA_Tables, DBA_Indexes, etc. took over a minute. Other 9.2.0.4 DBs, even one where we drop and re-create 125,000 table and 180,000 indexes every week gave sub-second responses to the same queries. After pre-creating a from-scratch 9.2.0.4 DB and importing the contents of the slow one, we got the same sub-second response.

Anyway, we prefer to pre-create and transfer data. Caveat - our largest databases are only around 100GB. With huge databases, moving data around isn't nearly so easy.

Jack C. Applewhite - Database Administrator Austin (Texas) Independent School District 512.414.9715 (wk) / 512.935.5929 (pager)

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"Dennis Williams" <oracledba.williams_at_gmail.com> Sent by: oracle-l-bounce_at_freelists.org
03/05/2007 12:09 PM
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Subject
10g upgrade survey

List,  

If you've upgraded more than one database to 10g, please let me know what method you chose:  

1. dbua
2. Manual upgrade
3. Created a 10g database and migrated the data.

Either reply to the list or to me directly. Also please let me know why you chose the path you selected and if you had to do it again if you'd done it differently.  

Thanks,
Dennis Williams

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