Upgrading Apex 3.0.1.00.12 to Apex 4.0.x.0 for EBS R12.1.1

Hi Friends,
I'm planning to upgrade the apex version (apex 3.0.1.00.12) in EBS R12.1.1 to apex 4.0.x.0 the latest
apex version.Can you please let me know what all the step I need to follow.
Best regards,

Hi,
Once you download the APEX 4 zip file and extract it, you will find docs folder, from my point of view everything is given there, for upgradation & installation.
you can follow that documentation.
Thanks,
Jaydip Bosamiya
+91-76000 23053
http://jbosamiya.blogspot.com

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    *Plateform : RHEL 6 64 bit*
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    *9062910 - Interoperability Patch For R12.1.1 On 11.2 RDBMS ( The downloading options given for this Patch is Linuxx86 However the Current server is RHEL 64 bit*
    *I am not sure if its compatible for linux 64 bit arch ?  Please confirm)*
    EBS is a 32-bit application - you need to apply the 32-bit version of the patch.> 8919489 - Oracle E-Business Suite Techstack 12.1.3 Product Release Update Pack> 9868229 - CST_LAYER_ACTUAL_COST_DTLS_V Becomes Invalid After 11.2.0.2 Upgrade> 10163753 - BIV_B_AGE_H_SUM_MV Fails During Index Creation> 11071569 - ADBLDXML Fails On Windows Server 2008 R2 64 Bit  > 9738085 - Sourcing CMD File On Windows Exits With 1> 9852070 - ADBLDXML And AUTOCONFIG Complete With JAVA.LANG.UNSATISFIEDLINKERROR> 12686610 - R12 And R121 Backport Request For Bug Fix 12336911> 6400501 - Not Able To Compile Forms Library With 11G DB (patch for 10.1.2 forms ORACLE_HOME)>Correct -  apply all of the above. >    DO i need to apply the following patches to the 11.1.0.7 database ORACLE_HOME ??> > 7695070 - Change In The Timezone File Format> > 13417321 - DST 18 : Half Yearly DST Patches, MAY 2012> 14112098 - DST Changes For DSTV18 (TZDATA2012C) - Need OJVM Fix >Yes - pl see instructions in MOS Doc 563019.1  - this is identified in "Daylight Saving Changes" section of 1058763.1> 7695070 - Change In The Timezone File Format  ( Not sure of .... Please confirm)>You have to apply the 10.1.0.5 version of this patch to the 10.1.2 and 10.1.3 HOMEs - see MOS Doc 563091.1    >   And after that >  Download & Install the 11.2.0.3 x86_64 software (files 1of7.zip and 2of7.zip of patch 10404530)  is that fine ?> >Correct - you will also need to download and install the Examples CD as noted in my blog post. >  Thanks>  MZHTHSrini                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              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