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'”,...
View ArticlePDB 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...
View ArticleEasily 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...
View ArticleClik here to view.
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...
View ArticleRMAN 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...
View ArticleRMAN 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...
View ArticleClik here to view.
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...
View ArticleRMAN 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...
View ArticleOracle 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...
View ArticleMigrating 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...
View Article