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March 2016

EM13c DBaaS, Part 1 On-Premise and the Test Master

With EM13c, DBaaS has never been easier.  No matter if you’re solution is on-premise, hybrid, (on-premise to the cloud and back) or all cloud, you’ll find that the ability to take on DevOps challenges and ease the demands on you as the DBA is viewed as the source of much of the contention.

One-Sentence Paragraphs

One-sentence paragraphs are something I encounter often in my work as an editor. In skilled hands they are a tool for emphasis and driving a point home. But they can also indicate a need for a writer to put more effort into organizing content and providing context and transition to enable readers to follow in the author's thought process.

If one-sentence paragraphs provide emphasis, then a stream of such paragraphs gives a staccato effect emphasizing everything and thus nothing. The result is not unlike the old, Dick and Jane readers. For example:

Capitalize proper nouns. 

These include names of people and places.

Brand names are proper nouns.

Trademarks are a special case. 

Don't capitalize names of everyday objects. 

Oracle Cloud – About buttons, icons, links and other stuff…

While scrolling to the DBaaS interface pages, I realized that I was spending a lot…

Is a year a leap year ?

This post seems timely given that yesterday was Feb 29. 

In almost every case I can think of, you should be relying on native Oracle date functions to perform any kind of date arithmetic.

This is perhaps one of the very very few exceptions Smile


SQL> set timing off
SQL> create or replace
  2  function is_leap_year1(y number) return boolean is
  3    x date;
  4  begin
  5    x := to_date('2902'||y,'ddmmyyyy');
  6    return true;
  7  exception
  8    when others then return false;
  9  end;
 10  /

Function created.

SQL>
SQL> create or replace
  2  function is_leap_year2(y number) return boolean is
  3  begin
  4    return mod(y,4)=0 and ( mod(y,100) != 0 or mod(y,400) = 0 );
  5  end;
  6  /

Function created.

SQL>

Loading LOB from a file

I observed this idiosyncracy recently when loading some lob from external files using PL/SQL:

First we’ll create a file to be loaded, and ‘wc’ tells us it is 75 bytes in size 



SQL> !echo "This is line 1" > /tmp/lobfile
SQL> !echo "This is line 2" >> /tmp/lobfile
SQL> !echo "This is line 3" >> /tmp/lobfile
SQL> !echo "This is line 4" >> /tmp/lobfile
SQL> !echo "This is line 5" >> /tmp/lobfile
SQL> !wc /tmp/lobfile
       5      20      75 /tmp/lobfile

Then create a standard routine to load it into the database