ALTER DATABASE MOUNT
Thu May 02 11:05:42 2019
ORA-00210: cannot open the specified control file
ORA-00202: control file: '/u01/app/oracle/fast_recovery_area/orcl/control02.ctl'
ORA-17502: ksfdcre:3 Failed to create file
ORA-205 signalled during: ALTER DATABASE MOUNT...
Oracle has confirmed that they have implemented some changes in the kernel that affect ODM. .
Oracle have confirmed the root cause for this issue lies within the Oracle code line and a fix will be in a future SRU. As of publishing this is anticipated to be Oracle 11 SRU 8. The tracking id provided by Oracle for this issue is SR #3-20064803111
For now, the only workaround will be to downgrade FROM (or not upgrade TO) any 11.4.8 kernels.