David Hueber

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

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(…)

ODA 12.2.1.2.0 – VLAN Management

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(…)

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

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(…)

About SSH keys in Oracle Public Cloud

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(…)

Oracle 12c duplicate in cluster fails with ORA-65500

I had to perform a duplicate database between 2 ODAs and was always facing an ORA-65500 at the begin of the RMAN operation. Looking a bit deeper in the log outputs pointed me out that it was due to some(…)

ODA – VMs possibilities & performances

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(…)

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

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(…)

Oracle 12c Backup & Recovery: What’s new?

After months of waiting, Oracle Database 12c is finally available. In this posting, I am going to provide a summary of the new features of Oracle 12c in terms Backup and Recovery. Pluggable, what else? For sure, the most(…)

Oracle 12c: Pluggable databases not that isolated

As you probably know, the multitenant databases is the new feature of Oracle 12c to solve the dilema of applications segregation. Thanks to a multitenant container database, it allows to manage many databases as one taking advantage of resources(…)

Linux: Disks diagnostic using smartctl

Facing disk issues such as corruption or block defect is thankfully not happening frequently. However when it does, the diagnose may look sometimes like a real struggle. This is forgetting that disks integrate since years the S.M.A.R.T technology. Good point,(…)