Tag: Oracle Exadata

Issues and workarounds for Exadata Patching (JAN-2019)

This post describes some of the most recent issues I have faced while patching an Oracle database machine (Exadata).   0 / Details Applying PSU 01/04/2019 (version 18.1.12.0.0.190111) Database Machine X5-2 / X6-2 stacks, which were running 12.1.2.3.5.170418 before the…

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Exadata Smart Scan: A Quick Overview

I decided to write about Exadata Smart Scan feature for this blog post. Why Smart Scan? Well, because it is awesome and I don’t know any other relational database system that has this feature. So what is Smart Scan and…

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How to Reduce Exadata Core Count

During preparation for a client’s datacenter migration, we decided to move services one-by-one to the datacenter / hardware in order to keep the scope of changes controlled. To accomplish this, we also needed to resize the CPU count of Exadata…

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How to extend the /u01 filesystem on an Exadata

Marketers are very good at selling everyone on the fact that resources (CPU, disks, memory) are now infinite, which is mainly true on a slide but it’s less true in real life. You may one day face this situation with…

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How to Prevent Linux 7 Housekeeping from Breaking Oracle

Linux 7 introduced multiple changes and enhancements to the kernel. Among them was automated housekeeping for temporary files. In version 6, tmpwatch is available to manage unused files in temp directories. It can be scheduled via cron to automatically keep…

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Exadata: How to manage OS dependencies when upgrading to 19c

Exadata 19c comes with Linux 7 and Exadata 12c and 18c come with Linux 6. There will then be an upgrade to Linux 7 when upgrading from 12c or 18c to Exadata 19c or above. In this specific case, you…

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Listener over Infiniband on Exadata (part 1)

Nice topic, right? Beautiful thing to work with when you have Oracle Engineered Systems. So, why would you configure a listener over the InfiniBand Network? How does that make sense in your environment and how would you leverage that? Background…

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How to patch an exadata (part 6) – timing

Edit November 2018 : This post has been rebranded and now also includes how to upgrade Exadata to 18c. The new version can be found here. Quick links to Part 1 / Part 2 / Part 3 / Part 4…

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How to patch an exadata (part 5) – troubleshooting

Edit November 2018 : This post has been rebranded and now also includes how to upgrade Exadata to 18c. The new version can be found here. Quick links to Part 1 / Part 2 / Part 3 / Part 4…

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How to patch an exadata (part 4) – the rollback procedure

Edit November 2018 : This post has been rebranded and now also includes how to upgrade Exadata to 18c. The new version can be found here. Quick links to Part 1 / Part 2 / Part 3 / Part 4…

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