Solution : https://service.sap.com/sap/support/notes/148535 (SAP Service marketplace login required)
Key words :
domainsuser -> select domain -> <local_hostname>groups -> ora_<sid>_dba -> add -> <domain>\sapservice<sid>make, database files failed additional key words rman, local group ora_<sid>_dba, database instance gp0 failedbr280i time stamp 1999-04-16 12, insert nt user sapservice<sid>, error recovery releasing channel resourcesrman-00569, svrmgr> connect internalsvrmgr> revoke dba, nt users sapservice<sid>, logged onrman>recovery manager complete, unix users <sid>adm
Related Notes :
| 480266 | Problems with the SYSDBA/SYSOPER/INTERNAL connect |