R12.2, WebADI, OutOfMemoryError in oacore if Profile Option "BNE_OOXML_ENABLED"

I want to share some my knowledge about WebADI. In some cases oacore gets out of memory error and WebADI fails in uploading.

Error Message of WebADI

---------------------------------

The result of the upload cannot be displayed.   Contact your system administrator if this problem persists.  This was due to a program fault.  Leave this window open to have it make more attempts to display the upload results.

Error Message of oacore log file

---------------------------------

<Error>

<Kernel>

<oacore_server1>

<[ACTIVE] ExecuteThread: '11' for queue: 'weblogic.kernel.Default (self-tuning)'>

<BEA-000802> <ExecuteRequest failed

java.lang.OutOfMemoryError: Java heap space.

java.lang.OutOfMemoryError: Java heap space