#EMd360 … OEM health checks made easy

Oracle Enterprise Manager 12c is a great tool! Now that 13c is out, it is getting even better. This post however it not really about Oracle Enterprise Manager, rather than a quick and simple health check tool that I’ve put together. With the help of of some really cool co-workers (Carlos Sierra and Mauro Pagano), I’ve put together a small diagnostic tool call EMd360.

EMd360 stands for Enterprise Manager d360. The concept behind this tool is just like other tools that have been released with the 360 concept (edb360 and sqld360); to provide a quick and easy approach to checking an environment. As with edb360 and sqld360, EMd360 is a completely free tool for anyone to use.

So, why is there a need for EMd360? It is quite simple, there are so many things that go into OEM and you get so much out of OEM…

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Truths and Lies about DB_LOST_WRITE_PROTECT

David Loinaz

The name of this parameter always makes me think that if it is set, the system will be protected against lost writes, so it will prevent occurring.

A data block lost write occurs when an I/O subsystem acknowledges the completion of the block write, while in fact the write did not occur in the persistent storage, but knowing that I/O subsystem is not part of the Oracle Database code, you may  wonder, “how Oracle is able to protect against a lost write when it is not responsible for writing“. Well, in my opinion, the name of this parameter is misguided, because it is not preventing lost writes.

So why use it? When you have a lost write situation, the sooner you detect it, the better, and this parameter is very useful to detect lost write as soon as possible and will help you to, under some circumstances, be…

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