We are doing the Solaris 10.2.0.4 7592346 patch with RHEL to follow. README leaves issues with Best Practices: 1. At what point should an Instance that is monitored with Grid Control be put in GC blackout ? Is this critical ? -- Shutdown, blackout, backup, startup-and-apply-CPU procedures, post-apply work, backup, shutdown, end-blackout, startup ? -- Guessing that an SA with some Oracle experience could be performing the patch work, can you recommend URLs that presents examples of CPU installations ? 2. What do you like for an intuitive directory - OFA-happy - for storing the patch and its unzip ? -- $ORACLE_HOME/OPatch/patch is an obvious choice. $ORACLE_BASE/admin/patch is used, too. Preferences ??? 3. Finally, testing after a CPU cycle. We had a suite of RAT (Real Application Test) runs, back a bit. Is there anything recommended for a Best Practices suite, today, suitable for post-install testing ? TIA