Wednesday, June 29, 2011

Common questions about merge apps patches

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Question:

Can we merge patches in Oracle apps?

Answer:


You can merge multiple patches into a single patch by using AD Merge Patch. This AD
command line utility merges multiple AutoPatch-compatible patches into a single,
integrated patch. Once the merged patch is created, you use AutoPatch to apply it in a
single operation. Applying a merged patch reduces the time it takes to complete the
patching process.

In general, you can safely merge any Oracle Applications patch with any other Oracle
Applications patch. Older split driver patches can be merged with newer unified
driver patches. Patches can and should be merged with their listed prerequisite
patches to make patch application easier.

Additional Information: See AD Merge Patch in Oracle Applications
Maintenance Utilities.

Question:

Can we merge the NLS patches along with US patch and apply the same

Answer:

You can merge .However the recommended method is:
If an Oracle Applications system contains multiple languages other than American
English (US) and you are applying multiple patches for each language, the
recommended method is to merge all US patches into a single patch and all patches for
every non-US language into a single patch. Then, apply the merged US patch followed
by the merged language patch.

You can also merge US patches with the additional language patches or merge each
language in separate language-specific patches. Depending on your downtime
window and your system topology, it may be necessary to keep the US and non-US
patches separate. (See Applying an Emergency NLS Patch in this chapter). This
procedure assumes that you will apply US and language patches separately.

 Basically you can try 2-3 times on a test system which is cloned from production to apply the merged patch US and ARABIC .
If no errors then you can apply on production.

Question:


What are the cases merging will not work out?

Answer:

AD Merge Patch cannot merge patches of 
different releases,
different parallel modes, 
different platforms. 

However, it can merge patches for a specific platform with a generic patch, or
patches with different source character sets. 

AD Merge Patch
notifies you if you try to merge incompatible patches.

However, patches that affect the Applications DBA (AD) product must be handled
separately. AD patches can be merged with other AD patches, but AD patches and
non-AD patches cannot be merged because AD patches may change the AutoPatch
utility itself. Merged AD patches must be created separately and applied before you
apply non-AD patches.
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