Blog Post: Oracle: Now Really in the Cloud
The "buying experience" for Oracle Cloud solutions has not been very cloud-like until now. Most services did not have the "Buy Now" button that other cloud vendors offer, but instead a list of phone...
View ArticleBlog Post: How to Drop a Tablespace with deleted datafiles
Some times we have to deal with a tablespace that for some reason, its datafiles were deleted. In that case, we have two options, either restore the deleted datafiles and apply a recovery process or...
View ArticleWiki: Oracle Wiki
A useful collection of Oracle database development and adminstration resources that can be freely added to and updated by the community.
View ArticleWiki Page: Preparing for Oracle DB Cloud and Java Cloud
Oracle has gotten much better at provisioning their Platform-as-a-Service (PaaS) instances lately. If you’ve never tried the Oracle PaaS cloud earlier, or have given up because of the various issues...
View ArticleBlog Post: TFA - Upgrading your latest version to the latest version
In my previous article about TFA, I showed how to upgrade TFA with the binaries from Oracle Metalink, this allowed us to use many of the diagnostic tools directly from TFA. However, my friend Gleb...
View ArticleBlog Post: Plantilla de Región Hero
Generalmente cuando creamos nuestras páginas en APEX, la región de la “Ruta de Navegación” se muestra con la plantilla “Title Bar”, como vemos en la imagen de abajo: Para que nuestras páginas se...
View ArticleBlog Post: How to change the database name in 12c
To change the database name is a common task for every Oracle Database Administrator, however with every version some things change and it is necessary to review the process that we have been using in...
View ArticleBlog Post: PREDICTION_DETAILS function in Oracle
When building predictive models the data scientist can spend a large amount of time examining the models produced and how they work and perform on their hold out sample data sets. They do this to...
View ArticleBlog Post: adstpall.sh: Database connection could not be established. Either...
trying to startup EBS R12.2. with the following error :- adstpall.sh: Database connection could not be established. Either the database is down or the APPS credentials supplied are wrong. to solve this...
View ArticleBlog Post: NoSQL workshop at Oracle user group conference
Oracle NoSQL Database has been regularly featured at the conferences of the Northern California Oracle Users Group. But, at its most recent conference, the Northern California Oracle Users Group dared...
View ArticleWiki Page: Hurdle - Reinstate database after failover performed by Fast Start...
Concept Fast Start Failover feature automates the failover by using Observer and it doesn't requires DBA intervention during disaster recovery scenario. Observer is a component of Dataguard Broker...
View ArticleWiki Page: Configuring database role based Global services – 12c
Written by Nassyam Basha Introduction We have seen managing Global data services in Data Guard configuring by failover test and so on, if any situation occur like the role transitions of the Data Guard...
View ArticleWiki Page: Using Global and Session sequences - Oracle Active Data Guard 12c
Introduction We are using sequences so far in primary database so that users can generate their unique integers, Even in 11gR2 Active Data Guard there are many limitations respective to the...
View ArticleWiki Page: Oracle RAC on Solaris LDOM Shared Disk configuration
Introduction: All these days there are certain common words like " cloud, virtualization, consolidation " very frequently used in IT industry. There are so many organization still not convinced to run...
View ArticleBlog Post: Oracle Cloud v/s Amazon Cloud?
A few years ago, I taught an online class in Oracle database administration for the University of Washington. Every student was given their own virtual machine for the duration of the class, courtesy...
View ArticleWiki Page: SQL Plan Management
The Oracle documentation does not reveal all the details of how SQL Plan Management works. According to the documentation : When the database performs a hard parse of a SQL statement, the optimizer...
View ArticleBlog Post: Major and Minor keys in Oracle NoSQL Database
Oracle NoSQL Database uses Major and Minor key values to achieve user-controllable record co-location. Records are stored based on the hash of the major key, so all of the records with the same major...
View ArticleWiki Page: Creating Oracle Database Cloud
In an earlier article , I showed the steps to prepare for using the Oracle Database Cloud and Oracle Java Cloud. There are four steps: Creating an SSH key pair Creating Oracle Storage Creating Oracle...
View ArticleWiki Page: Streaming Data from One MySQL Table to Another
Written by Deepak Vohra Consider the use case that data is being added in a MySQL table for user A and is also to be made available to user B. Or, data is being added in a MySQL table for user A and a...
View ArticleBlog Post: ORA-00918 column ambiguously defined
What is the cause of the "ORA-00918 column ambiguously defined" error? How do I resolve this?
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