So you end up with 4 oracle homes the old grid/old database the new grid/new database then you had to clobber/remove the old ones ( well or leave a real mess ).
Now if you read the older 11.2 ReadMe's and install guides yes it did "say" that yes you could do an in place upgrade but ... well it was a lie and ... well it did not work. So you were forced to do the out of place.
Looking at the latest ReadMe ( just a quick look ) is giving me a sense of deja vu ... this sure seems to read like the old stuff I remember that said yes you could do it.
Anyone have any real world testing done now with 18.104.22.168 to provide any feedback here before I wade on in?
This is how it reads now ... for 22.214.171.124 ...
This feature enables you to upgrade an existing installation of Oracle database to Oracle Database 11g Release 2 (126.96.36.199) into the same Oracle home directory by replacing the existing database files. The patch set application requires more downtime and is not recommended. This upgrade type requires less disk space.
Note:If you select In-place upgrade to upgrade Oracle database to the latest version, then you must:
This feature enables you to install Oracle Database 11g Release 2 (188.8.131.52) in a new, separate Oracle home directory. After the installation is complete, the data from the database in the old Oracle home directory is migrated to the database in the new Oracle home directory.
Out-of-place upgrade process is similar to Oracle database upgrade from one version to another and is the recommended type. The benefits of this upgrade type is that the patch set application requires much less downtime, and is safer when the patch set application must be aborted. This upgrade type requires more disk space to accommodate two Oracle home directories simultaneously.