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Jérôme Dubar

ODA 19.12: How can you manage DB Systems with odacli?

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

Introduction As virtualization is available for all ODAs now, you could ask yourself if it’s a good idea to use this virtualization or not. Databases can be created as bare metal, but also within a DB System for better isolation. And both can be used on the same ODA. If you’re looking for how to deploy an ODA with KVM virtualization, please have a look at my previous blogpost here. What is a DB System?…

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Jérôme Dubar

ODA: Quickly solve ILOM and BIOS update errors

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

Introduction Patching an Oracle Database Appliance is sometimes quite tough and you often struggle to solve failures at different steps. Regarding ILOM and BIOS patching errors, a simple workaround is possible. Errors when patching ILOM and/or BIOS This is something I recently had on an ODA X7-2S when trying to apply patch 19.11. Patching of the test server was OK, but patching the production server on a week-end was not OK. I needed to find…

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Clemens Bleile

ODA 19.11.: ORACLE_HOMEs on ACFS

By | Oracle | 4 Comments

Introduction Beginning with Oracle Database Appliance (ODA) 19.11. the ORACLE_BASE and ORACLE_HOMEs are created on ACFS. That’s good news, because there is much more space on ASM than on the internal disks, i.e. no space issues with /u01 anymore. So how does it work? ORACLE_BASE and ORACLE_HOME on ACFS When installing an ODA from scratch then ORACLE_BASE and ORACLE_HOME are already on ACFS. See an example of a freshly installed ODA X8-2M: [[email protected] ~]# odacli…

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Jérôme Dubar

Deploying a KVM-based virtualized X8-2M ODA

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

Introduction Until now, High-Availability (HA) ODAs could have been deployed either in bare metal or in virtualized mode. Virtualized mode means that instead of installing a classic Linux system on the nodes, an OVM hypervisor (based on Xen) was deployed. This hypervisor had at least one VM, a special one called ODA BASE, holding all the databases and having direct path to ASM disks. Other VMs could be created, not for databases but for applications,…

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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

A typical ODA project (and why I love Oracle Database Appliance)

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

Introduction You can say everything about Oracle infrastructure possibilities but nothing compares to experience based on the realization of real projects. I did quite a lot of ODA projects during the past years (on other platforms too), and I would like to tell you why I trust this solution. And for that, I will tell you the story of one of my latest ODA project. Before choosing ODAs A serious audit of the current infrastructure…

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Jérôme Dubar

odacli create-database -io doesn’t work for older databases in 19.9

By | Database Administration & Monitoring | 4 Comments

Introduction On ODA, you create your databases with odacli create-database. You can create a complete database, and it takes about 10 minutes, and you can also create an instance-only database. It will simply and quickly create a record in the ODA registry, start the instance with a basic pfile, and that’s it. Then you’re supposed to do the next step: feed up the database with a manual restore or an RMAN duplicate. Create a 12.2…

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Jérôme Dubar

Configure Data Guard with odacli on ODA

By | Database Administration & Monitoring | No Comments

Introduction I always thought integration of Data Guard was a missing feature on Oracle Database Appliance. For sure, you can configure Data Guard manually as you do on a classic server, but as an appliance, ODA should have proposed an easier way for configuring that. After years of waiting for this feature, it’s now available, and I just tested it. And I’m here to give you my feedback. Disclaimer You’ll need 2 ODAs for building…

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Jérôme Dubar

Disk usage on ODA – Free MB and usable MB

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

Introduction Oracle Database Appliances rely on ASM to manage disk redundancy. And ASM is brilliant. Compared to RAID, redundancy is managed at the block level. For NORMAL redundancy, which is similar to RAID1, you need at least 2 disks, but it can also work with 3 disks, 4 disks, 5 disks and so on. There is no need for parity at the disk level. HIGH redundancy, which does not exist in RAID technology, is basically…

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