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Role Operations with Snapshot Standby 12c
In this Article I will show you the result of performing Data Guard Broker Role Operations when we have a Snapshot Standby Database in our configuration. Usually when we have a Physical Standby in our...
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How to Create a Physical Standby Database using Backup Pieces
In this article we will learn How to create a new Physical Standby using Backup Set and also DUPLICATE in RMAN, this is a fast way to create Physical Standby when to create the Standby using ACTIVE...
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Role Operations involving two 12c Standby Databases
In this article we will analyze the behavior of Data Guard Broker when we have two Standby Databases and we are performing Role Operations. I will try to cover all the scenarios, I will do some...
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OTN Appreciation Day: Multitenant
Supporting the idea of Tim, I am writing this post to say that my favorite feature of Oracle Database is "Multitenant". Oracle Multitenant Architecture was introduced in Oracle Database 12.1.0.1 (12c)....
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Extents Allocation: Round-Robin
DBA's perform many tasks related to datafiles and tablespaces like creation of them but also creation of segments. Every segment as you know have extents and finally those extents are allocated in...
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SERVER=NONE in V$SESSION using Shared Server
When you are dealing with Shared Server there are some things that you have to know in order to understand what is going on in your database. Last night I was talking with a friend who asked me "Hey...
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Oracle Internals: Adding a column with default value
For this example I will use the following table:SQL> create table dgomez.t1 (id number, value varchar2(20)) tablespace tbs1;Table created.Let's insert 2 rows:SQL> insert into dgomez.t1 values...
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Oracle 12c Global and Session Sequences
In Oracle 12c we have two new keywords to create sequences: SESSION and GLOBAL as you can see in the following image that was taken from Oracle Database 12c SQL Reference:The definitions of these two...
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X Convención de Informática UMG San Marcos
Note: This article was written originally in Spanish. If you are reading this article in other language it is because of the automatic translator of ToadWorld.El pasado sábado tuve la oportunidad de...
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How to rename an ASM Diskgroup
Oracle ASM was introduced in Oracle Database 10g, since then, several enhancements were introduced with every version. Nowadays ASM is the most common filesystem used by the Database Administrators to...
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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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catcdb.sql and the util.pm issue in Oracle Database 12.2
A couple of days ago I was playing with Oracle Database 12.2.0.1.0 Enterprise Edition Extreme Performance (released last week in Cloud) and I tried to create a new Container Database. As per the 12.2...
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Oracle Developer Tour 2016 - Guatemala
El día lunes 21 de Noviembre del 2016 se llevó a cabo el primer Oracle Developer Tour en Guatemala, este es el único evento que puede reunir a expositores con Certificaciones de Java Master y Títulos...
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Oracle DB 12.2 Local Undo: PDB undo tablespace creation
The documentation of 12cR2 was released and with that several people are learning all the new features. There are some questions that people are starting to have, for example, when configuring Local...
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¿A bug after configuring Local Undo in Oracle 12.2?
So while playing with Local Undo configuration in my Oracle Cloud environment, using binaries Oracle Database 12.2.0.1.0 Enterprise Edition Extreme Performance I found the following strange scenario. I...
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