Hello DBAs,Please I need top resolve these errors at database as database is mounted but couldn't be open.There is no backup and database is in noarchivelog mode.Database version:- standard edition.O.s:- linux redhat v5 Please check.Thanks SQL> select status from v$instance; STATUS------------------------------------MOUNTED SQL>SQL> alter database open;alter database open*ERROR at line 1:ORA-01115: IO error reading block from file 7 (block # 44988)ORA-01110: data file 7: '/oraData/cdsdbdata/ENRPGEST.dbf'ORA-27072: File I/O errorLinux-x86_64 Error: 5: Input/output errorAdditional information: 4Additional information: 44988Additional information: -1 SQL>