Database system file is corrupt, No backup is available of system file and database is not in archive log mode, Anyone can help to me . How I can recover system corrupt file?
I'm sorry to tell that no way to recover .
But U can try some internal parameter to force open the database.
If anything not working. Try to use PRM-DUL (DBRECOVER for Oracle) to unloader database and load data to new database
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.