Sun has offered various tools in the past to analyze Sun/Solaris systems for patches which are installed or missing, e.g. PatchDiag, PatchCheck, PatchPro, smpatch (see the Sun Patch Portal for details). Some of them are not actively maintained, some are huge and opaque, some don't run on older Solaris releases or stripped-down machines.


Patch Check Advanced (PCA) is a perl script which generates lists of installed and uninstalled patches for Sun/Solaris systems and optionally downloads and installs patches.