This Log Buffer Edition starts with an awesome post by Dana Pylayeva from Rakuten LinkShare, a long term Pythian client, about her deep and insightful reflections about security. And as usual, it also brings together all the sparkling gems of Oracle, SQL Server, and MySQL. Enjoy!

Oracle:

Alberto illustrates the algorithm used by Oracle (in 11.2.0.3) to fast refresh a materialized view (MV) containing only the SUM aggregate function.

Tim Hall writes about Oracle 12c Multitenant Option : CDBs and PDBs. …

Does size matter? This question has been teasing mankind since the beginning. But now, due to improvements in technology, size doesn’t really matter. Databases now have the features to tackle all data: big, medium, small, or very small. This Log Buffer Edition is here once again to bring you your data news of all sizes.

Oracle:

Marco tells us how to create a pluggable database by cloning an existing local PDB and talks about a bug in Oracle 12c.

Niall installs …

We know very well that database technologies need a blog presence, and how to best offer that blogging experience — without the danger of boredom — is something tons of Oracle, SQL Server, and MySQL bloggers continue to show through Log Buffer. Enjoy!

Oracle:

Various approaches exist to organize your groovy scripts and package up utilities.

Oracle Certification announces the release of the new Oracle Linux 6 certification paths.

Designed for the Cloud, the new multitenant architecture of Oracle Database 12c now enables customers to greatly simplify and accelerate database consolidation by …

More and more blogs are springing up to cover database technologies. This ethereal Log Buffer Edition yet again cherishes this spectacular growth and offers a few links from the Oracle, SQL Server, and MySQL arenas.

Oracle:

Are Oracle enqueue rules leading to deadlock changes again in 12.1? Charles Hooper asks.

James Morle writes about optimal Oracle configuration for efficient table scanning.

Richard Foote writes a quick post on the reuse of empty leaf blocks in index.

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This Log Buffer Edition marvels at the ease, simplicity, and power of the database bloggers as they go about their adventures in the realms of Oracle, SQL Server, and MySQL.

Oracle:

The new Oracle Database 12c’s “Implicit Result Sets” (IRS) feature allows query results to be returned from a stored PL/SQL procedure (or a PL/SQL anonymous block) without requiring a special PHP code.

Ranka has been spending a lot of time on big data and its application, architecture, and processes.

Kashif Manzoor tells us how to use the new Clone Log Parser utility in Oracle E-Business Suite.

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In this Log Buffer, you have naan bread, two types of roti, pasta, Karachi biryani, Chiken Tandoori, Beef tikka, eggplant masala, mixed pickles, French pastry with some elixir to wash all of it down. Yes, once again, this edition of Log Buffer contains numerous flavors from Oracle, SQL Server and MySQL.

Oracle:

Sometimes it’s the little differences that make something really cool, and Martin was wondering why this hasn’t made it into the Oracle dictionary before.

Oracle introduced a new feature for DataGuard called Far Sync. This configuration is designed to support synchronous redo transport between primary and standby database, which are far apart.

There are a few …

So far, I have been blogging about curious RDBMS caveats mostly related to Oracle and MySQL databases. Some examples: You never stop learning about Oracle features NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: MySQL SQL incompatibilities: NOT IN and NULL values MySQL Bad Idea #384 But there are also other databases, … Continue reading 10 Things in SQL Server Which Don’t Work as Expected →

SQL tidbits are always valuable and highly searched for by newbies (as opposed to reading the SQL documentation). Sometimes we seasoned SQL developers take for granted little things like when a single- or multiple-character wildcard comparison works. It seems we know what newbies don’t. That you need a wildcard comparison operator not simply and equality comparison operator.

The question posed to me was, “Why doesn’t my wildcard comparison work?” Here’s a simplified example of their question.

SELECT 'Valid' AS "Test"
FROM    dual
WHERE  'Treat' = 'Tre_t'
OR     'Treet' = 'Tre_t';

Naturally, the answer is that the equality operator compares the strings based on their exact match (character sensitively in Oracle and character insensitively in MySQL). It needs to be rewritten by replacing the equals (=) comparison operator with the LIKE …

There is a tsunami of blog posts out there as Oracle has made public its 12c database and SQL Server and MySQL with numerous new offerings. This Log Buffer Edition covers a few salient blog posts.

Oracle:

Among the major ETL tools in the market , Oracle Data Integrator outshines not just for a couple of reason. Oracle has invested a lot in developing the tool after it took over from Sunopsis.

You want to learn more about innovative features of WLS 11g and 12c? You want to get answers about the roadmap and capabilities?

Kristin Rose tells us that 12c  offers the latest innovation from …

Nelson Mandela, The Madiba, said: ” There is nothing like returning to a place that remains unchanged to find the ways in which you yourself have altered.” Bloggers return to their blogs to experience the same charming thing, and database bloggers are no different. Enjoy this edition of Log Buffer.

Oracle:

With the new release of Oracle Database 12c, Oracle has removed the old Database Console.  In its place, they have given us Enterprise Manager Express (EM Express for short).

And here is a perspective about Why Not to Upgrade to Oracle 12c Database.

Sayan Malakshinov talks about Oracle 12c: Lateral, row_limiting_clause.

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