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Database management

Mouhamadou Diaw

Patching ODA HA from 19.8 to 19.10

By | Database Administration & Monitoring, Database management, Operation systems, Oracle | No Comments

In this blog I am describing the steps to patch an ODA HA from the version 19.8 to version 19.10. The patching was done with a customer. Thanks to Pierre. The name of the servers were changed The ODA is an X8-HA with following nodes -server-aa -server-ab Before starting the patches, be sure that you have enough space on / /u01 and /opt filesystems. Below the state of our filesystems [[email protected] Downloads]# df -h /…

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Jérôme Dubar

Is it possible to switch a service between 2 pluggable databases?

By | Database Administration & Monitoring, Database management, Oracle | No Comments

Introduction In an Oracle database, services have multiple purposes: identifying group of users prior authenticating them enabling/disabling access to a database for particular groups managing preferred nodes on a RAC configuration redirecting users to the primary after a switchover/failover when using Data Guard or Dbvisit Standby redirecting read only connections to Standby database with Active Guard option A customer asked me if services could be used for switching between PDBs without modifying client’s connexion, for…

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Stéphane Haby

SQL Server: Replace the old SCOM login by the new one

By | Database Administration & Monitoring, Database management, SQL Server | No Comments

It’s every time hard to replace a login who as role and permissions in every database like the service account for SCOM. In the previous version of Scom, you create a service account (dbi\scom) to access the SQL Server and check the health of the databases. Now it’s possible to use the System Center Operations Manager Health Service (NT SERVICE\HealthService). To do this change on all SQL Servers, I write a script. I create the…

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Dieter Henig

Rename your DB clone completely

By | Database Administration & Monitoring, Database management, Oracle | 2 Comments

Introduction Have you ever renamed your database? When you cloned a DB, you probably started it with a new name and cloning (duplicating) with RMAN provided a new DBID, right? So why should we need to rename a DB? There may be several reasons: due to changed company rules, you need to rename all your DBs After a restore you need to run the DB with another name After a snapshot clone, (see my recent…

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Dieter Henig

Clone a Terabyte Database in Seconds

By | Database Administration & Monitoring, Database management, DevOps, Hardware & Storage, Oracle | One Comment

Introduction Have you ever cloned a database using RMAN? Have you ever gotten the advice not to clone during daytime to avoid performance downgrade on the entire storage or network? For a proof of concept, we wanted to evaluate a Pure Storage array in terms of feasibility and speed of database cloning by using storage-based snapshot technology. First, I want to mention that PureStorage produces Storage devices in several sizes, all based on NVMe devices…

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Stéphane Haby

Copy or Migrate a SSISDB environment 2.0

By | Database Administration & Monitoring, Database management, SQL Server | No Comments

Based on the blog “Copy or Migrate a SSISDB environment” of my colleague Christophe, I create a new one named 2.0. In the precedent script, you need to give the folder name and environment name and he generates all environment variables for these 2 parameters. In my case, I need to generate all folders and what are in these folders. The 2.0 script will generate the creation of the folder and the environment name if…

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Jérôme Dubar

ODA: Move a DB to ASM after migrating from 11g to 19c

By | Database Administration & Monitoring, Database management, Hardware & Storage, Operation systems, Oracle | No Comments

Introduction Modern Oracle Database Appliances still support 11gR2, but there are several drawbacks using this old version: if you want/need support for your databases, you should pay for Market Driven Support (11gR2 is even no more under extended support – it ended at the end of 2020) some ODA features will not work with 11gR2 (odacli Data Guard feature for example) the use of ACFS filesystems is mandatory As I already told you, it’s more…

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Jérôme Dubar

Oracle Database Appliance: ODA patch 19.10 is out

By | Database Administration & Monitoring, Database management, Hardware & Storage, Operation systems, Oracle | No Comments

Introduction 4 months after the 19.9, here comes the 19.10 version of the Oracle Database Appliance patch. Let’s have a look at what’s new. Will my ODA supports this 19.10 patch? The 19.10 release will be the same for all ODAs, as usual. The oldest ODA compatible with this release is the X5-2. Don’t expect to install this version on older models. X4-2 is stuck to 18.8, X3-2 is stuck to 18.5 and V1 is…

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Jérôme Dubar

How to configure additional listeners on ODA

By | Database Administration & Monitoring, Database management, Hardware & Storage, Oracle | No Comments

Introduction Oracle Database Appliance has quite a lot of nice features, but when looking into the documentation, at least one thing is missing. How to configure multiple listeners? Odacli apparently doesn’t know what’s a listener. Let’s find out how to add new ones. odacli Everything should be done using odacli on ODA, but unfortunately odacli has no commands for configuring listeners: odacli -h | grep listener nothing! The wrong way to configure a listener One…

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Jérôme Dubar

Oracle Database Appliance: what have you missed since X3/X4/X5?

By | Database Administration & Monitoring, Database management, Hardware & Storage, Oracle | No Comments

Introduction ODA started to become popular with X3-2 and X4-2 in 2013/2014. These 2 ODAs were very similar. The X5-2 from 2015 was different with 3.5 inches disks instead of 2.5 inches and additional SSDs for small databases (FLASH diskgroup). All these 3 ODAs were running 11gR2 and 12cR1 databases and were managed by the oakcli binary. If you’re still using these old machines, you should know that there is a lot of differences compared…

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