Hello guys, i have a quick question about upgrading a 11g database to a 12c database.
while going through the oracle docs. i came across a 12c utility called catctl.pl which enables you to upgrade the databases in parallel mode for faster upgrades. but i see that the the catctl.pl is run from the command line and not the sql prompt.
My question is how does catctl.pl know which database to upgrade? does it upgrade all the database instances running the server? or only the ones started in "startup upgrade" mode?
i couldn't find the answers to the above questions in the oracle docs or other blogs i've searched. If any one of you can clarify my question, it's much appreciated.
Thank You