TOI

The Flash Cache Mode still defaults to Write-Through on Exadata X-4 because most customers are better suited that way – not because Write-Back is buggy or unreliable. Chances are that Write-Back is not required, so we just save Flash capacity that way. So when you see this

What happens when you unplug a pluggable database that has local users who have been granted common roles? They get copied upon plug-in of the PDB to the target container database!

The picture above shows the situation before the unplug command. It has been implemented with these commands:

You can restore a datafile directly from a physical standby database to the primary. Over the network. With compressed backupsets. How cool is that?

Here’s a demo from my present class Oracle Database 12c: Data Guard Administration. prima is the primary database on host01, physt is a physical standby database on host03. There is an Oracle Net configuration on both hosts that enable host01 to tnsping physt and host03 to tnsping prima

UKOUG Oracle Scene has published my article about two exciting Data Guard 12c New Features:

http://viewer.zmags.com/publication/62b883ad#/62b883ad/44

Hope you find it useful :-)

A 12c multitenant database introduces the new concept of local users and common users. This article shows simple use cases why DBAs may want to create common users – in contrast to the common users that are created automatically, like SYS, SYSTEM, MDSYS etc.

A typical requirement is to have a superuser other than SYS, but with the same power. Like the common user C##_SYS in the picture below.

Or suppose we have many pluggable databases (PDBs) and different superusers responsible for different PDBs like C##_ADMIN1 and C##_ADMIN2:

When you install an 11g RAC database without Grid Control respectively Cloud Control present, this is what the DBCA will give you:

There is one Database Control OC4J Container only, running on host01. Should host01 go down, the Enterprise Manager is no longer available now. We could make that a resource, known to the clusterware and let it failover in that case. But also – and even easier – we can start a second OC4J Container to run on host02 simultaneously like this:

The call for papers is still open for UKOUG Tech 14 – a great event to speak at for sure!

The board explicitly encourages first-time speakers and women to submit an abstract.

Both doesn’t apply for me, but I have submitted abstracts in spite :-)

I can say only the best about the past annual conferences of the UK Oracle User Group. Great speakers, very good conditions and an excellent opportunity to get in touch with other Oracle enthusiasts.

From my present Oracle Database 12c New Features course in Zürich: We have introduced the handy new functionality that you can move datafiles online in 12c. That is at first glance having an issue for pluggable databases:

LVC stands for Live Virtual Class – this is how we call our courses done interactively over the internet. At Oracle University, we have a fine crew of people who take care that the attendees (as well as the instructor, sometimes) are not impacted by technical problems. This can be e.g. connectivity issues, browser incompatibilities, questions how to deal with the learning platform WebEx or which way to choose to access the remote lab environment. All that and more is handled by LVC producers, so that the instructor can focus on the educational matters. I really appreciate this separation of duties, because I find it already demanding enough to deliver high quality Oracle Technology classes!

Three days full of seminars are offered by Oracle University in London (19th to 21st May) at the Expert Summit

It is my pleasure to present there together with Arup Nanda, Dan Hotka, Jonathan Lewis and my dear colleagues Iloon Ellen-Wolff and Joel Goodman.