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Mouhamadou Diaw

Oracle 18c DataGuard : Rman RECOVER STANDBY DATABASE

By | Database Administration & Monitoring | 2 Comments

With Oracle Database 18c, we can now refresh a standby database over the network using one RMAN command, RECOVER STANDBY DATABASE. The RECOVER STANDBY DATABASE command restarts the standby instance, refreshes the control file from the primary database, and automatically renames data files, temp files, and online logs. It restores new data files that were added to the primary database and recovers the standby database up to the current time. When you use the RECOVER…

 
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Franck Pachot

18c runInstaller -silent

By | Oracle | No Comments

By Franck Pachot . You find two different ‘runInstaller’ under an Oracle Home. The old one, the Oracle Universal Installer, in $ORACLE_HOME/oui/bin. And the new one, in $ORACLE_HOME directly. They have the same name but are completely different. The old one was used to install an Oracle Home from the installation media. But in 18c you don’t use it. It has been used by Oracle to build the Oracle Home image. Then you download and…

 
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Franck Pachot

Oracle 18c preinstall RPM on RedHat RHEL

By | Oracle | No Comments

By Franck Pachot . The Linux prerequisites for Oracle Database are all documented but using the pre-install rpm makes all things easier. Before 18c, this was easy on Oracle Enterprise Linux (OEL) but not so easy on RedHat (RHEL) where the .rpm had many dependencies on OEL and UEK. Now that 18c is there to download, there’s also the 18c preinstall rpm and the good news is that it can be run also on RHEL…

 
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Franck Pachot

18c: No Active Data Guard required (and detected) when only CDB$ROOT and PDB$SEED are opened in read-only

By | Oracle | No Comments

By Franck Pachot . When you clone a PDB on the primary CDB, you want that the same is automatically done on the standby ones. Unfortunately, for this operation, the CDB must be opened read-only. In 12.1 even the PDB needed to be opened read-only (Ludovico Caldara reported this in his blog). This, as far as I know, was fixed in 12.2 where MRP reads the files without the need to have the PDB opened….

 
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Franck Pachot

ADWC – System and session settings (DWCS lockdown profile)

By | Oracle | No Comments

By Franck Pachot . The Autonomous Data Warehouse Cloud service is a PaaS managed service where we have a PDB and an ADMIN user which has most of the system privileges. For example, we have the privilege to change initialization parameters: SQL> select * from dba_sys_privs where grantee=user and privilege like ‘ALTER S%';   GRANTEE PRIVILEGE ADMIN_OPTION COMMON INHERITED ——- ——— ———— —— ——— ADMIN ALTER SESSION YES NO NO ADMIN ALTER SYSTEM YES NO…

 
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Franck Pachot

ADWC – the hidden gem: Zepplin Notebook

By | Oracle | 3 Comments

By Franck Pachot . In the previous blog posts I explained how to create, and stop/start the Autonomous Data Warehouse Cloud service. And I didn’t show yet how to connect to it. It is easy, from sqlplus or SQL Developer, or SQLcl. But there’s something more exciting to run some SQL queries: the Oracle Machine Learning Notebooks based on Apache Zepplin. At first, I didn’t realize why the administration menu entry to create users in…

 
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Franck Pachot

ADWC – a Docker container to start/stop Oracle Cloud services

By | Oracle | One Comment

By Franck Pachot . In the previous post, I’ve explained how to start and stop the Autonomous Data Warehouse Cloud service from PSM (PaaS Service Manager). There’s a setup phase, and a run phase starting with service-start and ending with service-stop. And the setup is specific to an Oracle Cloud account, storing information in the local user home. You may want to run different setups, and even provide an easy way to start/stop an Oracle…

 
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Franck Pachot

ADWC: start/stop with PSM Command Line Interface

By | Oracle | No Comments

By Franck Pachot . In the previous post, I explained how to create an Autonomous Data Warehouse with PSM (PaaS Service Manager Command Line Interface). The most common operation you want to do with it is starting and stopping the service. This is the best way to save credits for hourly billed services. And PSM is the easiest: run from everywhere (it is Python 3) and no need to provide credentials each time. In the…

 
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Franck Pachot

ADWC: Creation of Autonomous Data Warehouse Cloud service

By | Cloud, Oracle | 4 Comments

By Franck Pachot . You want to try the Autonomous Data Warehouse Cloud Service? That’s easy. Here is a Step-by-Step. Cloud Credits First, you need Cloud Credits. You may have bought them (any recent negotiation with Oracle Sales, even for on-premises, involves some Cloud Credits). You can have a free trial with 300$ Cloud Credits available for 1 month. To get another month, you need a different e-mail address and different Credit Card number (not…

 
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