A few days ago my colleague Oracle installation was damaged
(system tablespace control files etc). Accidentally Windows Server ntbackup was suspended then dumps which he has are old. Some datafiles looks healthy is any method to restore data?
Basically is not possible to reuse or extract data from these datafiles.
Only possibility is to ask Oracle support/consulting... they have a tool named DUL that can read the datafiles and dump the content. Unfortunatelly the tool is not distributed...
DUL tool...is there any way I can read about this tool or other tools of this kind.
A direct unload data tools like DUL: prm-dulDBRECOVER for Oracle
https://s.dbrecover.com/dbrecover-for-oracle-latest-dist.zip
DBRECOVER Recovery Options
For Oracle incidents, start with the DBRECOVER for Oracle trial to verify table visibility, row previews, and export readiness on copied datafiles. For MySQL and InnoDB incidents, DBRECOVER for MySQL is free software and can inspect.ibd files, ibdata1, and database directories locally.
When the case is urgent, preserve the original files first, work from copies, and contact paid emergency support with the database version, platform, error messages, file list, and recovery objective.