If you are trying to Apply any Big Patch, while Checking for conflicts…., “BSU” might end-up with Java Heap Errors.
To Avoid, Try to Increase the size in $FMW_Home/utils/bsu . Edit bsu.sh using any editor as below.
Change the Value MEM_ARGS=”-Xms256m -Xmx512m” to MEM_ARGS=”-Xms1024m -Xmx1024m” or even bigger and save.
This will resolve the above issue and re-try applying the patch .
For more Details Ref Oracle MOS Doc: Weblogic 10.3.6 Patching Error Using BSU – “java.lang.OutOfMemoryError: GC overhead limit exceeded” (Doc ID 2007492.1) and
Enhancement for WLS BSU (Smart Update): Resolves Very Long Time to Apply Patches – Especially When Checking for Patch Conflicts (Doc ID 2271366.1)
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Sriram Sanka
Hi there, This is SCP Ranga Rao Sanka working as (A product Manager/Principal DBA)., I have a broad range of Experience in Administration and Implementation in the areas of Database, Cloud, and Other Servers. I am one of the moderators at ORAFAQ. The primary purpose of this blog is to share knowledge.
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Sriram Sanka 
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