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DBRECOVER for Oracle

DBRECOVER for Oracle

we are about to purchase the DBRECOVER for Oracle, because we have a corrupted DB, with no backups and no dmp. We have tried the demo version but we have some problems and we need some info in order to make the order:
 
1. DB was configured with EL8ISO8859P7 character set but we can't find any appropriate character set from your application, so all data are not readable 
 
2. We can't upload data (is this a limitation on the demo version?)
 
3. We use no dictionary option, so all objects are recovered with ids. Is any method to recover the objects with their names? (DB is not available)
 
 
1.EL8ISO8859P7  is available in version 2020 09 , download link :https://github.com/macleanliu/oracle-dul/releases/download/2009/dbrecove...
2.Why use non-dictionary mode ? lost system01.dbf system tablespace?