Database management

SQL Server Tips: How many different datetime are in my column and what the delta?

Few months ago, a customer asks me for finding in a column, how many rows exist with the same date & time and the delta between them. The column default value  is based on the function(…)

Dbvisit 8 Standby Daemon on Windows

By Mouhamadou Diaw In this previous blog, we have installed Dbvisit standby for Windows on both servers. We suppose that the database is created and that the standby is configured (see this blog). The steps are(…)

Install Dbvisit 8 on Windows

By Mouhamadou Diaw In a previous blog we described how to install dbvisit standby in a Linux box. In this article I am going to describe the installation on a Windows machine. We are using(…)

SQL Server Tips: Drop a database-user attached to a service…

Few weeks ago, I have a little issue when I try to drop a database-user without login Unfortunately, I do a little mistake at the beginning… I receive like every morning a report if all AD logins (computers, groups,(…)

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 recommendations). Normal restore operations with(…)

Running PLSQL as SYSDBA through DEFINER-rights?

Recently I got an interesting request: The customer wanted to allow the application installation routine to create a guaranteed restore point without giving it all required privileges to do so. So the idea was to encapsulate creating and dropping a(…)

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(…)

Upgrade Oracle Grid Infrastructure from 12.1.0.2.0 to 12.2.0.1.0

The following blog will provide the necessary steps to upgrade the Grid Infrastructure from 12.1 to 12.2, for a Standalone Server. One of the new features of GI 12.2 is the usage of the AFD (Oracle ASMFD Filter Driver).

Patching ODA lite to 12.2.1.4.0

Here is how to apply the latest patch for your ODA. As usual the Oracle documentation is not 100% accurate. I applied this patch on 2 ODAs X7-2M previously deployed in 12.2.1.2.0, no intermediate patch was needed. 1) Download the(…)

Logical standby: No view for data guard status on session level

On logical standby you have to switch off data guard at least on session level to make modifications on objects which are maintained by data guard. This is done by command alter session disable guard; Dataguard(…)