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10 Newer Entries Showing entries 61 to 70 of 1506 10 Older Entries

Displaying posts with tag: Oracle (reset)

Percona Live Europe 2015! Call for speakers; registration open
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Percona Live is moving from London to Amsterdam this year and the event is also expanding to three full days. Percona Live Europe 2015, September 21-23, will be at the Mövenpick Hotel Amsterdam City Centre. The call for speakers and Super Saver  …

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Log Buffer #426: A Carnival of the Vanities for DBAs
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This Log Buffer edition transcends beyond ordinary and loop in few of the very good blog posts from Oracle, SQL Server and MySQL.


Oracle:

  • Variable selection also known as feature or attribute selection is an important technique for data mining and predictive analytics.
  • The Oracle Utilities SDK V4.3.0.0.2 has been released and is available from My Oracle Support for download.

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Making Existing SQLPLUS Scripts 12c and Container DB (PDB) Compatible
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Oracle 12c introduces new catalog features including CDB_ dictionary views (which include a CON_ID column) superseding the DBA_ views that most DBA sqlplus scripts are based upon.

However, existing DBA sqlplus scripts can easily be modified using just a few simple sqlplus techniques to be compatible with 11g, as well as all types of 12c databases including legacy and container databases.

The following simple SQL and sqlplus techniques can be used to make a “universal script” that is compatible with all versions.

Illustrating the Issue

Let’s say for sake of example that we have a simple 10g/11g monitoring script that’s …

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Bash Arrays & Oracle
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Last week, I wrote about how to use bash arrays and the MySQL database to create unit and integration test scripts. While the MySQL example was nice for some users, there were some others who wanted me to show how to write bash shell scripts for Oracle unit and integration testing. That’s what this blog post does.

If you don’t know much about bash shell, you should start with the prior post to learn about bash arrays, if-statements, and for-loops. In this blog post I only cover how to implement a bash

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Optimizer hints in MySQL 5.7.7 – The missed manual
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In version MySQL 5.7.7 Oracle presented a new promising feature: optimizer hints. However it did not publish any documentation about the hints. The only note which I found in the user manual about the hints is:

  • It is now possible to provide hints to the optimizer by including /*+ ... */ comments following the …
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Generated (Virtual) Columns in MySQL 5.7 (labs)
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About 2 weeks ago Oracle published the MySQL 5.7.7-labs-json version which includes a very interesting feature called “Generated columns” (also know as Virtual or Computed columns). MariaDB has a similar feature as well: Virtual (Computed) Columns.

The idea is very simple: if we store a column

`FlightDate` date

in our table we may want to filter or group by year(FlightDate), month(FlightDate) or even dayofweek(FlightDate). The “brute-force” approach: use …

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Slides from the MySQL Session at Great Indian developer Summit 2015
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Wanted to send a pointer to the slides from my session at #GIDS 2015.

Will followup with an impressions blog soon.

My sql5.7 whatsnew_presentedatgids2015 from Sanjay Manwani

SQL Developer – Fedora
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This is the continuation of my efforts to stage an awesome Fedora developer’s instance. It shows you how to install Java 1.8 software development kit, which is nice to have. Though you can’t use Java 1.8 officially with Oracle SQL Developer 4.0.3 it is required for Oracle SQL Developer 4.1. Fortunately, the Oracle Product Manager, Jeff Smith has advised us that you can use Java 1.8 JDK with Oracle SQL Developer 4.0.3, and he’s written a comment to the blog post that it runs better with the Java 1.8 SDK.

After you install Oracle SQL Developer 4.0.3 or Oracle SQL Developer 4.1, you can watch Jeff …

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MySQL OCP Exams
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Planning out my year, I decided to take the Oracle OCP and MySQL OCP exams. I checked for review books and was pleasantly surprised to find the soon to be released OCP MySQL Database Administrator Exam Guide (Exam 1Z0-883). However, I noticed …

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Introducing VMware Continuent 4.0 – MySQL Clustering and Real-time Replication to Data Warehouses
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It’s with great pleasure we announce the general availability of VMware Continuent 4.0 – a new suite of solutions for clustering and replication of MySQL to data warehouses.

VMware Continuent enables enterprises running business-critical database applications to achieve commercial-grade high availability (HA), globally redundant disaster recovery (DR) and performance scaling. The new suite

10 Newer Entries Showing entries 61 to 70 of 1506 10 Older Entries

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