Business continuity (Disaster Recovery) has become a very critical factor for every business, especially in the financial sectors. Most of the banks are tending to have their regular DR test to meet t...
Once the ASM instance is started, all the basic background processes, as well as some that are specific to the operation of ASM, are started. Notice that all the ASM processes begin with asm, whereas ...
Introduction Virtualization is one of the core assets of today’s data center infrastructure. The benefits and capabilities of virtualization are driving organizations towards virtualization technologi...
Introduction Materialized views have been used for several years and they are being improved by Oracle with every database version or release. Up to Oracle Database 12cR1 Oracle Materialized Views sup...
Introduction Data changes frequently in OLTP environments and Oracle has to be aware of those changes or at least to try detect these changes in order to adjust the optimizer and execute sentences in ...
In this topic, I would like to cover the base instance configuration of Db2 v11.1 to enable SSL connections from clients. In most situations, databases are accessed over a restricted network, but in s...
Oracle grid infrastructure 12.2 installation and deinstallation process is similar to prior releases. Its very common that the installation of software may fail due to many reasons. It could be a hard...
SQL Optimization is intimidating for a lot of people. Even when you have great tools like Quest SQL Optimizer, people can be reluctant to hop into a different UI with so many powerful options. Thankfu...
Introduction Several articles have been written about how to track the usage of indexes and there are several scripts to determine which indexes are being used after monitoring for a while. In previou...
Introduction In my previous articles I explained two very important concepts about Undo Data; one is how Oracle manages the retention time and the other is how Oracle reuses the undo extents. You can ...
Hi, I just wrote an article (click here to see article) that illustrates how B-Tree indexes work. Basically, they store key values that are to be looked up in their associated table. So, key values ...
Introduction Multi-tenant container database architecture in Oracle Database 12cr1 The Oracle Database 12c Release1 introduced the Oracle Multi-tenant architecture, which allowed consolidation of mul...
