Kiran Dalvi17 Dec, 20230 Comments1 Min ReadORA-65500: Could Not Modify DB_UNIQUE_NAME While Duplicating Database. Solution :If you are creating a RAC auxiliary, then it must be created as a single instance (with RMAN) first, then converted to RAC.1.set cluster_database=FALSE in the auxiliary database parameter file.2. Remove database resource from CRS. srvctl remove database -d PRIM Oracle DBAShare: ORA-38856: Cannot Mark Instance UNNAMED_INSTANCE As EnabledORA-38880: Cannot Advance Compatibility From 12.1.0.2.0 To 12.2.0.1.0 Due To Guaranteed Restore Points