Restoring Oracle backups

Brian Peasland

Published: 25 Apr 2005

My Windows NT and also my Oracle 7.5 database got corrupted. I have the backups of the database. I had installed Oracle 8i after installing the NT. Can the Oracle 7.5 backups be restored to Oracle 8i? I lost all of my archive logs and redo files. If the restore is possible, can you explain the process?

You cannot do a direct restore from one version of Oracle to a newer version. If you have a cold backup, then you can perform the following:

1. Restore your database datafiles, control files, and online redo logs to your server.

2. Point your environment to your Oracle 8i software.

3. Use the migration utility to migrate your Oracle 7 database to Oracle 8i.

This document lists the detailed steps on performing an Oracle 7 -> Oracle 8i migration:

Once the migration is complete, you should be able to open your database as an Oracle 8i database.

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Restore data from backup of datafile without archives I removed a small datafile and I don't have all archives, but I have an old backup of this datafile. How can I restore this data?

Using redo logs to restore to point of failure I am migrating from Oracle 8i to 9i. The server will be backed up nightly, but the database will only be backed up on a biweekly basis. If we encounter a failure, I intend to use the archive logs to recover. Do I also need to apply the redo logs in order to restore right up to the point of failure?

Migrate Oracle 8i from one server to another I want to know the steps to carry out the migration from one Oracle server to another server (same environment). My database is Oracle 8i on Windows 2000.

Restoring Oracle 9i backup in Oracle 8i We are taking a backup on Oracle 9i but we want to restore it in Oracle 8i -- is it possible?

Retrieving database records from backup files We reinstalled the operating system in our system and took a backup of all database files of the old database (control, redolog, dbf), and now I have installed Oracle again in our system. Kindly tell me how I retrieve the records from the backup files.

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