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How to prevent RMAN archivelog backup from log switch

When RMAN backups archivelogs, it does a logswitch before backing up all archivelogs. In some cases this log switching should be suppressed. This can be done with expression “until time ‘sysdate'”,...

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PDB RMAN backups available after plugging in on a new CDB with Oracle 18c

With Oracle 18c, it is possible to use PDB rman backups created on the source CDB (they are called PREPLUGIN backups) when the PDB has been relocated to a target CDB. In my environment, my original CDB...

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Easily manage dual backup destination with RMAN

Backup on disk with RMAN is great. It’s fast, you can set as many channels as your platform can handle for faster backups. And you can restore as fast as you can read and write files on disk with these...

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Restoring a database without having any controlfile backup

It should never happen but sometimes it happens. You just lost your datafiles as well as your fast recovery area (probably because most of the time these areas are on the same disks despite the...

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RMAN catalog upgrade, why, when and how

One of our customer has been initially creating a RMAN catalog on an Oracle database release 12.1.0.2.0 and was now intending to register new Oracle 12.2.0.1.0 databases. Registering the databases will...

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RMAN PITR recover table Oracle 12c

At one client’s site, I had to restore a table someone had partially deleted one week before. Before Oracle 12c, we had to duplicate the target database to another server, and then to export and import...

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Useful Linux commands for an Oracle DBA

Introduction Oracle & Linux is a great duet. Very powerfull, very scriptable. Here are several commands that make my life easier. These tools seems to be widespread on most of the Linux...

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RMAN in a Multitenant Environment

The Oracle Multitenant architecture came with Oracle 12c a few years ago. For people usually working with traditional Non-CDB database it might be confusing the first time to do Backup and Recovery...

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Oracle 19c : Point-In-Time Recovery in a PDB

Point-In-Time Recovery is also possible in a multitenant environment. As in Non-CDB, a recovery catalog can be used or not. In this blog we will see how to recover a dropped tablespace in a PDB. We...

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Migrating Oracle database from windows to ODA

Nowadays I have been working on an interesting customer project where I had to migrate windows oracle standard databases to ODA. The ODAs are X7-2M Models, running version 18.5. This version is coming...

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