Infrastructure at your Service

All posts by David Hueber

David Hueber
Chief Executive Officer (CEO), Principal Consultant

David Hueber has ten years of experience in infrastructure operation & management, engineering, and optimization. He is specialized in Oracle technologies (engineering, backup and recovery, high availability, etc.), Service Management standards and Oracle infrastructure operation processes (Service Desk, Change Management, Capacity Planning, etc.). David Hueber is ITILv3 Service Operation Lifecycle certified and Linux LPIC-1 certified. He received a university degree in Informatics and Networks at the IUT Mulhouse, France. He also studied Information Systems at the Conservatoire National des Arts et Métiers in Mulhouse, France. His branch-related experience covers Financial Services / Banking, Chemicals & Pharmaceuticals, Transport & Logistics, Retail, Food, etc.
David Hueber

ODA migration challenges: Non-OMF to OMF + 11.2.0.3 to 11.2.0.4

By | Database Administration & Monitoring | One Comment

To do some application and performances tests, I had to copy a database from a third party Linux server to an ODA X7-2M. Looks pretty simple on the paper, but 2 small challenges came into the game. The first was that of course the source database was in Non-OMF while ODA works fully in OMF. The second was that the source database is running 11.2.0.3 which is not supported and cannot be installed on the…

 
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David Hueber

ODA 12.2.1.2.0: Some curious password management rules

By | Database Administration & Monitoring, Hardware & Storage | One Comment

While deploying an ODA based on the DCS stack (odacli), it is mandatory to provide a “master” password at appliance creation. The web GUI provides for that a small tooltip which describes the rules applied on password management. However it looks like there is some flexibility with those rules. Lets try to check this out with some basics tests.  

 
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David Hueber

ODA X7-2S/M 12.2.1.2.0: update-repository fails after re-image

By | Database Administration & Monitoring, Hardware & Storage | 5 Comments

While playing with a brand new ODA X7-2M, I faced a strange behaviour after re-imaging the ODA with the latest version 12.2.1.2.0. Basically after re-imaging and doing the configure-firstnet the next step is to import the GI clone in the repository before creating the appliance. Unfortunately this command fails with an error DCS-10001:Internal error encountered: Fail to start hand shake to localhost:7070. Why not having a look on how to fix it…  

 
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David Hueber

ODA 12.2.1.2.0 – VLAN Management

By | Database Administration & Monitoring | No Comments

Virtual Local Area Network (VLAN) have become since several years a standard in enterprise class networks. Most enterprises are now segregating their network, especially for security reasons, between server and user or prod and test or applications and backup and aso. In the new release of ODA we finally get the support for VLAN on the bare metal platform. This article will briefly demonstrate how these are managed using ODAADMCLI.  

 
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David Hueber

ODA – 32GB template but got a database with 16GB SGA???

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

I got an interesting question today from a customer which created a database on ODA. He selected the template odb-04 which shows 32GB Memory but got a database with a 16GB SGA… Is it due to the PGA size, a limitation in the system, the huge pages usage which is reached or even a bug?  

 
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David Hueber

About SSH keys in Oracle Public Cloud

By | Database Administration & Monitoring, Technology Survey | No Comments

When working with resources on the Oracle public cloud, whatever it is IaaS or PaaS, the principle access method is based on SSH keys exchange. Once our instance is created this is going to be the first and only way accessing it. Of course afterward additional ports/services can be opened. However the question is how to manage these keys and how important are they?  

 
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David Hueber

ODA – VMs possibilities & performances

By | Hardware & Storage | No Comments

As you know it is possible to install the ODA in a virtualized mode and to take avantages from all cores not licensed with Enterprise Edition for additional VMs. The question is what could we do with it and which performances could we expect… The answer to the first question is indeed pretty simple….almost everything. If you have and ODA X5-2 with the version 12.1.2.3.0 implemented in virtualized mode then you are running an OVM…

 
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David Hueber

ODA 12.1.X.X.X – add a multiplexed control file under ACFS

By | Database management | 5 Comments

Since version 12, ODA stores databases on ACFS volumes instead of ASM directly. This slightly changed the way the files are managed and administer. This articles presents how to multiplex your control files on ACFS. At first database creation, ODA set up 3 ACFS volumes to store all non-CDB databases (CDB are managed on dedicated volumes): /dev/asm/datastore-386 62G 5.2G 57G 9% /u01/app/oracle/oradata/datastore /dev/asm/datastore-286 1.7T 871G 836G 52% /u02/app/oracle/oradata/datastore /dev/asm/datastore-360 2.2T 5.6G 2.2T 1% /u01/app/oracle/fast_recovery_area/datastore These…

 
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