Re: 8i to 10g migration

  • From: Bjørn Dörr Jensen <B.D.Jensen@xxxxxxx>
  • To: <paulastankus@xxxxxxxxx>
  • Date: Tue, 18 Jul 2006 16:42:52 +0200

Hi!
The upgrade-manual, but I think you have looked at that.
Expect problems with dangling synonyms and
differences with parameter-types between spec and body in packages,
for example leaving default-values. Package Body's wont compile if there are 
these minor differences.
So look at invalids.
You can upgrade directly ;-)
export/import: how big are your db? Try with your clone to see how long time it 
tooks.
And make your test on correct os-platform.
Measure time of typical batch-jobs and queries before upgrading.
Check your access to Metalink.
Plan in your calender that it won't succeed at 1. try.

And when upgraded - enjoy the big amount of new features (-: PL/SQL-developer 
group and DBA's should be prepared using the new features).

Greetings
Bjørn
  ----- Original Message ----- 
  From: Paula Stankus 
  To: oracle-l@xxxxxxxxxxxxx 
  Sent: Tuesday, July 18, 2006 1:07 PM
  Subject: Re: 8i to 10g migration


  We have the following environment:

  -a great deal of database links
  -materialized views over database links
  -Oracle 8.1.7
  -Solaris 2.9
  - .Net with ODP
  -Powerbuilder
  -Data Junction
  -Siebel
  -Cobol programs precompiled

  and are planning a migration from 8.1.7 to 10g.

  Where is the best place to look for gotchas:

  -database links
  -hints that have been desupported
  -Issues with .Net
  -Issues with Cobol precompilers
  -Performance concerns
  -migration path - direct migration or export/import????

  I am planning to clone production, give ample time to multiple development 
teams to test this out.  I am planning to take sample queries generating 
execution plans in both environments and traces.  I am planning a stress-test.  

  Any advice would be greatly appreciated.
  -required PL/SQL changes


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