When you remove, or back out, a patch, the patchrm command restores all files modified by that patch, unless any of the following conditions are true.
The patch was installed with patchadd -d, which instructs patchadd not to save copies of files that are updated or replaced.
The patch has been obsoleted by a later patch.
The patch is required by another patch.
The patchrm command calls pkgadd to restore packages that were saved from the initial patch installation.
The pkgrm command has the following syntax.
/usr/sbin/patchrm [-f][-B backout-dir][-C net-install-image | -R client-root-path | -S service] patch-id
Table 78 lists the ...