How can I recover datafile without backup?

How do I restore my datafile?

How to recover missing datafiles?1 Find the missing datafiles: ... 2 Take tablespace or datafiles offline: ... 3 Rename missing datafiles with original files: ... 4 Shutdown and mount the database: ... 5 Perform media recovery: ... 6 Open the database: ... 7 check the status of datafiles: ... 8 Bring the datafiles online:How to recover missing datafiles? | SAP Blogs

How will you recover the database from a loss of a data file?

Check for Data Files Stuck in Recover Mode1Go to the cmd prompt.2Start sqlplus.3At the sqlplus prompt, connect to the database (i.e., connect sys/password as sysdba).4Run the following query: ... 5If there are no rows returned here, then go to the section Check for Data Files that Need Recovery.How to Get Data Files Back Online

How do you recover from the loss of datafile if the DB is running in Noarchivelog mode?

RMAN Recover a Noarchivelog Database1Backup the database running in noarchivelog mode.2Make some changes to the database and do an incremental backup.3Rename the folder which contains all physical files of the database.4Restore the backup and recover.RMAN Recover a Noarchivelog Database - Burleson Consulting

How can I recover a single datafile in Oracle?

How to Restore Oracle Database using RMAN (with Examples)1Verify Backup Location. ... 2Step 1: Restore ControlFile from Backup. ... 3Step 2: Restore the Database. ... 4Step 3: Recover Database (and ResetLogs) ... 5Restore Specific Tablespace. ... 6Restore Specific Datafiles. ... 7Restore the Archived Redo Logs. ... 8Recover Specific Tablespace or Datafile.How to Restore Oracle Database using RMAN (with Examples)