Hi,
Sometimes You can get “ORA-27072: File I/O error ” error.
Details of error are as follows.
ORA-27072: File I/O error
Cause: read/write/readv/writev system call returned error, additional information indicates starting block number of I/O
Action: check errno
This error is related with the Storage error, so engage your Storage Administrator to investigate and fix storage/FC problems like Storage/FC/multipathing errors caused the disks being unavailable.
Do you want to learn Oracle Database for Beginners, then read the following articles.
https://ittutorial.org/oracle-database-19c-tutorials-for-beginners/