Infrastructure at your Service

Tag

Oracle 18c Archives - Page 2 of 3 - Blog dbi services

Oracle Team

Oracle 18c preinstall RPM on RedHat RHEL

By | Oracle | One Comment

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…

Read More
Oracle Team

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

By | Oracle | One Comment

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….

Read More
Oracle Team

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…

Read More
Oracle Team

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…

Read More
Oracle Team

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

By | Cloud, 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…

Read More
Oracle Team

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…

Read More
Oracle Team

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…

Read More
Oracle Team

Oracle 18c clone PDB and Transparent Data Encryption

By | Database Administration & Monitoring | One Comment

Let’s do some tests with the Oracle 18c new feature in creating PDB clone with DBCA. Unfortunately, this feature does not work when you have TDE enabled. Just to remember, with Oracle 12.2 we had the possibility to create PDBs with dbca just from PDBseed to from unplugged PDBs: Now in version 18c we can create PDBs from existing PDBs as follows (for this test TDE is disabled): You can choose the Pluggable Database you want…

Read More
Oracle Team

18c PDB switchover

By | Oracle | 4 Comments

By Franck Pachot . In multitenant, the recovery and availability are at CDB level. But customers asked for a switchover at PDB level so Oracle has done that in 18c, based on refreshable PDBs. For this test I have two multitenant database on an Oracle Cloud service in 18c: CDB1 and CDB2. The only special thing I did was disable the mandatory TDE encryption, because I was not able to have the switchover working. With…

Read More