Note the following limitations when using the patch keyword:
Patches cannot be retrieved from FTP locations or local backup, such as tape.
Signed patches cannot be added.
Patches must be installable with the patchadd command.
If a patch depends on a patch that is not currently installed, the patch is not installed. An error message is logged into the installation or upgrade log file.
You must determine the correct order of the patches for a correct installation of the patches.