With your software can you do dictionary recovery using systems tablespace that has tablespace block header Corruption. The database datafiles are all modified from a Ransomware, looks to be affecting only the tablespace headers. We managed to look at some data in the users tablespace. However there are some many objects and we need the dictionary to make more sense. Can you advise if its possible to use the system and users datafile with header block corruption?
Yes, it can . Please check this video:https://youtu.be/jOT6k-KF8Hg
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.