“Opinions expressed are solely my own and do not express the views or opinions of my employer.” After applying the rollback from the Critical Patch Updates PATCH 33583921 – GI Jan 2022 Release Update 12.2.0.1.220118 at both Oracle RAC Databases 12.2.0.1 and GRID 12.2.0.1, I found the following messages on the alert log of the database: After some investigation, I found that the error “ORA-7445 [kcbm_sim_one()+1288] [SIGSEGV]” is very generic and often the argument [kcbm_sim_one()] is related to many known bugs on the Oracle database from versions 10.1 to 10.4.…