Solution : https://service.sap.com/sap/support/notes/123370 (SAP Service marketplace login required)
Key words :
db14 reportsredolog_mirror online redolog file, additional key words, sapdba -check reports, sapdba patch level 57, prerequisites programming error, downloading sapdba, error message, redolog_not_mirrored, notes19466, instructions
Related Notes :
| 125588 | Corrections in SAPDBA version 4.0B |
| 19466 | Downloading SAP kernel patches |