Install the same R12 software instance even port pool, etc.

I test the upgrade of R12 and I have a question about the installation of the software stack R12 before the actual upgrade time. Example: Install the software of R12 one end of week and then start and perform the upgrade real next weekend. My concern is the fact that the installation of R12 runs autoconfig. Our plan is to install even the name of the instance database SID, port pool, etc. as the existing 11i instance but naturally to install R12 pile in a separate file system (in our case an appltop shared) which would be completely separate from the pile of tech 11i, oraInventory. I know it works because I've been there before, but my concern is that when R12 running autoconfig, it creates an entry for each application server in the service of autoconfiguration tables so now you have two, one for autconfig 11i and R12 autoconfig. It is clear by looking at the service of automatic configuration of OAM page. I not had problems in my preliminary testing doing this except that I found that it is best to stop the applications when you run installation R12 because the autoconfig part will get additional errors because of the ports being used because of the pool of local port. My question is what others have done this R12 installation before the actual upgrade period in the same way and if so any problem come upwards with the instance of 11i which must be available and in production for the time between installation R12 and the actual start of the upgrade? Hope it makes sense.

I work for Oracle and am considered an expert in the upgrade as I did upgrades of Applications since version 9.

This is the method that I use every time I have to perform an upgrade. You must have your 11i completely stop instance to perform the installation, so that the ports are not in conflict, and the installation does not update your 11i instance at all.

Tags: Oracle Applications

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