A.opatchauto handles both GI and database patching, while opatch is used for a single Oracle Home

B.opatch is GUI-based, while opatchauto is command-line only

C.opatchauto applies interim patches, and opatch applies bundle patches

D.opatch can patch Grid Infrastructure, but opatchauto cannot

A.By managing RAC node failover events

B.By automatically applying rolling patches

C.By eliminating the need for ASM

D.By restarting database components such as listeners, databases, and ASM automatically after failures or reboots