This is a small note describing how Oracle implemented the situation which is covered by the db file parallel read wait event. This events happens if Oracle knows it must read multiple blocks which are not adjacent (thus from different random files and locations), and cannot continue processing with the result of a single block. In other words: if it cannot process something after reading a single block (otherwise Oracle will read a single block visible by the wait ‘db file sequential read’).
This is part 2 of a number of blogposts about huge Oracle database IO’s.
If you landed on this blogpost and did not read part 1, please read part 1 here.
It’s been a while since I presented the first incarnation of my ‘about multiblock reads’ presentation. When I did this at the UKOUG TEBS conference in Birmingham in 2011, Christian Antognini chaired my presentation. After my presentation Christian showed me it’s possible to set the parameter ‘db_file_multiblock_read_count’ higher than 1MB/db_block_size (which is 128 if your blocksize is 8kB), and you could benefit from it if your hardware is sufficient. In fact, Christian showed me AWR reports (could also be statspack reports, not sure) which showed the benefit.
Suppose we want store al our “mongodb” tweets in a MongoDB database.
We need 2 additional node packages:
This post is just a reminder to myself how to install the vmware (fusion) stuff in a fresh installed OL6u4 installation. To be honest, it isn’t entirely “fresh”: I’ve ‘yum update’ed the installation, and I’ve installed the 11gR2 preinstall package (yum install oracle-rdbms-server-11gR2-preinstall) package already.
In one of the previous blogs a high level overview has been given about the functionality that RES Service Orchestration can bring. This post can be found here. In this blog post a few examples will be given about the potential benefits that RES Service Orchestration will bring when implemented in your company.
RES Service Orchestration is often the unknown product from the RES Software product portfolio. Where Workspace Manager is the well known product and where Automation Manager follows is Service Orchestration ‘in my opinion’ the excellent completion of Automation and dynamic delivery of IT services.
When creating and deploying Windows 8 apps to the Windows Store, all you need is a developer account from Microsoft. This can be obtained by creating an account in the Microsoft App Dev Center for Windows Store Apps. The verification and signing procedure of the app is then done by Microsoft.
But if you develop Windows 8 apps for Enterprise environments, where deployment is not done through the Windows Store, you have to ‘sign’ them in Visual Studio by using what is called a Code-Signing Certificate. Unfortunately you can’t just go to your Certificate Authority and use the standard Code Signing template and supply the certificate to your developers. We will show you how this has to be done.
You’re reading the blog post series ”Creating a Windows 2012 VM Template with SCVMM 2012“