Here is quick post on document/notes you should refer to upgrade your Oracle Applications to version 188.8.131.52
1. Upgrade of Oracle Application to 184.108.40.206 from previous release of 11i (11.5.5 to 11.5.9) should be done by applying maintenance pack i.e. Patch # 3480000 and few other prereq. & post patch steps. Follow Metalink Note # 316365.1
2. Your application should be on AD minipack I version 2 i.e. 11.AD.I.2 which is available via patch # 4337683 so first apply patch 4337683. (If you are not sure if you already have AD.I.2 or not query AD_BUGS table)
3. If you are planning to merge prereq. patches, NLS patches and other functional patches with 220.127.116.11 (3480000), note that AD.I.2 4337683 should not be merged as it is not possible to merge AD patches.
4. If you are already on 11.5.10 and wish to upgrade to 18.104.22.168, simply apply patch u3460000.drv using adpatch utility (316366.1) – Thanks RajeshManoharan for pointing out typo mistake
Metalink Note #
316365.1 Oracle Applications Release 22.214.171.124 Maintenance Pack Installation Instructions (Use this to upgrade from 11i i.e. 11.5.5,6,7,8,9 to 126.96.36.199)
316366.1 11.5.10 Oracle E-Business Suite Consolidated Update 2 (CU2) (Use this to upgrade from 11.5.10 to 188.8.131.52)
289788.1 Upgrading Oracle Applications (Use this doc to upgrade to 184.108.40.206 from 10.7 or 11.0.3)
Oracle ACE, Author, Speaker and Founder of K21 Technologies & K21 Academy : Oracle Gold Partner specialising in Design, Implement, and Trainings.