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What Oracle 12cR2 brought us in 2017 and what Oracle brings us for 2018
By Deiby Gómez (OCM11g , MAA OCM 12c and Oracle ACE Director) The year 2017 brought us a lot of good Oracle stuff; Oracle Database version 12cR2 was released for On Premises, and the new Autonomous...
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Oracle Database 12cR2 new feature: Lockdown Profiles
By Deiby Gómez Introduction:In the past, roles, system privileges, and table privileges were used to control the functionalities allowed to database users. However, roles and privileges don’t have...
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Oracle Database 12cR2 new feature: Proxy PDB
By Deiby Gómez Introduction:The need to communicate with external systems and exchange data made Oracle develop a way to connect to different Oracle databases to execute operations. Traditionally,...
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Oracle Database 12cR2 new feature: Application Root Replica
By Deiby Gómez Introduction:In my previous articles we have seen concepts like “Application Containers” and “Proxy PDB”, which are new in Oracle Database 12cR2. With Application Containers, you can...
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How to run SQL Statements across Pluggable Databases with catcon.pl
Introduction:Beginning with Oracle Database 12.1.0.1.0, DBAs started to work with Pluggable Databases. There were some large migrations of several databases from 10g/11g to 12c where they were...
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Oracle 12cR2 RMAN New Feature: UNTIL AVAILABLE REDO
By Deiby GómezIntroduction: Oracle has introduced several new features in its new version Oracle Database 12.2.0.1.0 and RMAN it is not the exception. Most of the DBA would agree that one of the...
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How to analyze Undo statistics to proactively avoid undo space issues
By Deiby GómezIntroductionIn 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...
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Oracle Database 12.2 - How to track index usage
By Deiby GómezIntroductionSeveral 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...
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Invisible Columns in Oracle 12c
Starting in Oracle 12.1.0.1 there are several new features, +500 I have heard, and one of a good features for developers is "Invisible Columns". Invisible Columns allows a developer create a table...
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Oracle Database 12.2 Statement-level Refresh for Materialized Views
By Deiby Gómez 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...
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Oracle EM 13c Database's historic data without DBA_HIST*
By Deiby GómezIntroductionData 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...
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Why Certifications Are Important
By Deiby GómezIntroduction:Ever since I started my career in Oracle technology I’ve always wanted to deliver the best support to my clients. I have wanted to solve the problems quickly. I am not afraid...
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Prepare yourself for passing the Oracle Certified Master 12c requirements!
By Deiby GómezIntroductionIn 2013 I began my preparation for becoming Oracle Certified Master (OCM) 11g. I was already OCP (Oracle Certified Professional) 11g and OCP 12c, so to get to the next level,...
View ArticleSolving Communication problems between DB and ASM instances
By Deiby Gómez IntroductionMost of the time I write how-to articles or I am introducing a new feature of Oracle Database. Those articles contain new information that’s good to know and help people fix...
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Block Corruption in an Oracle Database
By Deiby GómezIntroductionBlock corruption is a common topic when we are dealing with any software that stores data. In Oracle Database there are several types of logical structures that are mapped to...
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