Recommended OWB Patch before Repository Upgrade or Migration: 18.104.22.168 + 10185523 or 22.214.171.124 + 10270220 (replaces 9802120)
By antonio romero on Dec 07, 2010
Revised 6 December 2010 - Customers upgrading existing repositories from previous releases to OWB 11gR2 should now upgrade to OWB 126.96.36.199 on platforms where it is available and apply patch 10185523 before performing the migration.
Customers who want to use OWB 188.8.131.52 but who are using the Windows client (where the 184.108.40.206 client is not yet available) should contact support to obtain a pre-release OWB 220.127.116.11/Win32 client that will work with the currently released 18.104.22.168 server. More information on how to handle this upgrade is in the OWB 22.214.171.124 release notes.
Customers who are unable, for whatever reason, to move to OWB 126.96.36.199 should move to OWB 188.8.131.52 and then download and apply the patch 10270220. It is a cumulative patch that combines fixes for nearly all known issues with repository upgrades and migrations.You should also consult the Migration and Upgrade Paths whitepaper attached to this posting. Strategies for upgrading are described in this paper, including upgrading from pre-10.2 releases.
The information in the paper is correct apart from needing a refresh to recommend the 184.108.40.206 upgrade as a better option than patch 9802120. The paper will be updated shortly to reflect the latest patch levels.