Converting a Physical Standby Database to Snapshot Standby can be of a great solution if you need to do some new code test in a system but you can’t have a full Test Clone. Also, since the standby is a block by block copy of the Primary, we are making sure the test is made... » read more
I already mentioned that Autoupgrade allows now to be used in RAC Databases, but something that was also added recently (Autoupgrade 19.9.0 if I’m not mistaken) is the capacity to upgrade a Non-CDB database and plug-in it into a higher version Multitenant Database you already have in the system. You can see the needed configuration... » read more
![Create RAC Standby Database Using DBCA [19c Version]](https://project42.site/wp-content/uploads/2020/08/Standby_DBCA_RAC-360x240.png)
DBCA evolves the same way than most Oracle Components, and since 12.2 version, you can create Standby Databases directly using DBCA. Before you start, is important to check your version limitation, so for example, 12.2 only allows single instance Databases to be created (see this article by Frank Pachot [https://blog.dbi-services.com/12cr2-dbca-can-create-a-standby-database/]), but that is not longer... » read more
![Create Single Instance Standby Using DBCA [12.2 Version]](https://project42.site/wp-content/uploads/2020/08/Standby_DBCA-360x240.png)
Since 12.2, dbca can create Standby Databases directly, but with some restrictions, like only for Single Instance Databases and only non container Databases. This has changed for each version, and since 18c, you can create the RAC Standby and they can have PDBs (will have an article about that soon 🙂 ) For this test,... » read more
![Create Standby using RMAN Duplicate [12.2 Version]](https://project42.site/wp-content/uploads/2020/08/Standby-360x240.png)
While I was starting another project, I realised I don’t have any post covering Standby Database creation. Everyone has their own way of doing things, but last time I needed to create one, this was how I ended up doing it. The Primary Database will be called TEST and run in RAC1 cluster (rac1-node1 /... » read more
![Fixing No-logging corruption the easy way [12.2 feature]](https://project42.site/wp-content/uploads/2020/08/nologging-360x240.gif)
I have recently discovered a new way to easily fix nologging corruption in a standby which version is 12.2 or higher. The first thing we need to do for this test is to disable the force logging parameter from our Primary Database db1221 > select name,force_logging from v$database; NAME FORCE_LOGGING ________ ________________ DB122 YES db1221... » read more
![How to enable Multi Instance Redo Apply (MIRA) [12.2 feature]](https://project42.site/wp-content/uploads/2020/08/MIRA_spiderman_meme-1-360x240.jpg)
Since 12.2, Managed Recovery Process (MRP) can be started on multiple instances, making Standby recovery much faster and making easier for the system to be kept on Sync with your Primary Database (Found thanks to this old post: http://jeyaseelan-m.blogspot.com/2018/05/mira-multi-instance-redo-apply-12cr2.html) This new feature is called MIRA (more info in following PDF https://www.oracle.com/technetwork/database/availability/redo-apply-2745943.pdf) The process to enable... » read more
![Rolling Forward a Physical Standby using “Recover From Service” command [12.1 feature]](https://project42.site/wp-content/uploads/2020/08/mind-gap-360x240.jpg)
This is what we can see from the Oracle Doc ID 1987763.1 regarding Recover standby from Service option added in 12.1: Rolling Forward a Physical Standby Using Recover From Service Command in 12c (Doc ID 1987763.1) ========================================================================= Prior to 12c, in order to roll forward the standby database using incremental backups you would need to:... » read more
You probably already know about the Oracle cloud free tier which include Autonomous Database and 2 VMs for free forever. Something Id dint know, is that you can actually set a second (or third) database using it thanks to Oracle XE Database and couple of memory tricks. If you don’t know about Oracle XE, please... » read more