Quote:
Originally Posted by
allenhibbert
mksysb is the backout plan
I do have the DBA team verify the oracle version is compatible with the intended OS update. I also read up to determine myself.
I'm curious if applying the SP while the databases are still up would cause issues. The oracle is 11G, on AIX 7 TL1 SP9. I'd try it in a test area, if I could.
You seem to come from a different flavour of Unix, so maybe a bit of background information about Alternate Disk Migration is in order. To expand on what
ibmtech already explained:
One usually has a mirrored rootvg, which means that you have two identical disks carrying identical copies of the OS. ADM now does the following: it breaks up the mirror. Then you apply the update (or the installation - there is not only
Alternate Disk Migration but also
Alternate Disk Installation) to one of these copies. Then you reboot into this newly installed/updated environment.
If everything turns out OK you destroy the unchanged copy and remirror, so that you now have two copies of the new system images. If some problem occurs you reboot back into the old environment from the still existing (and unchanged) disk, destroy the new installation and remirror, arriving at the point you started from again.
Most of these steps are done behind the scenes by the provided procedures, but it helps to have a working picture of what is going on.
NOTE: at the end of the procedure do not forget to apply the
bosboot command and maintain the system bootlist with
bootlist command.
I hope this helps.
bakunin