OEM 12c – How patched are you?

It is a common mistake for many people to get their OEM 12c environment up and running, and then neglect to keep it patched up. All the while they will be cursing at how many error messages and bugs they hit day after day. This article explains the various OEM components which you’re going to want to think about patching every couple of months to get the most out of OEM.

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Silent upgrade from OEM 12.1.0.3 to 12.1.0.4

I’ve just been upgrading my Oracle Enterprise Manager Cloud Control 12c environment from 12.1.0.3 to 12.1.0.4, here are the steps I followed.

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GoldenGate – bounded recovery and log retention

GoldenGate Extract includes a feature called Bounded Recovery, but this doesn’t mean you don’t need to keep a certain amount of historical archive logs on disk. The GoldenGate documentation recommends keeping 8 hours of archive logs on disk, and this article explains why that is important.

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Raspberry Pi DNS Server

I’ve recently bought a Raspberry Pi to run a few small services I wanted to keep running on my home network.

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12c Cloud Control OMS and DB startup

I’ve just been having a look into the startup order of the various 12c Cloud Control components.

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Brand new ODA X3-2 fails to boot

Hit an interesting issue – a brand new unboxed X3-2 ODA fails to boot into an OS. It just goes through the various boot options including PXE, and then ends on a flashing cursor in the top left of the screen.

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Exadata cellboot USB issues

I had the dubious pleasure today of receiving the following alert from the Exadata storage server software on an X3 -

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ODA 2.8 – Creating Virtual Machines with the shared repository

ODA version 2.8 is available, and has a much anticipated feature – shared VM template repository.

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Benefits of a primary key with GoldenGate

GoldenGate supports tables with and without a primary key, but if you’re replicating tables that don’t have a primary key there are some important factors you should consider.

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SSH Tunneling to SCAN listener

I needed to connect via SQL*NET to a RAC 11.2 SCAN listener today, and initially couldn’t get it to work using my Putty tunnels.

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