Skip to main content

PL/SQL Challenge Website Joining Oracle!

When I (re)joined Oracle in March 2014, the PL/SQL Challenge website was also acquired by Oracle. I'd been thinking that in a few months or so, we'd have it up and running on an Oracle server, re-branded with lots of red.

But then, well, I got kind of busy with all sorts of other stuff. My bad.

But I am very happy to announce that over the coming weekend (13-14 June)PL/SQL Challenge will go offline for hopefully no more than a few days and then resurface as an Oracle website.

And that's why for the first time in five years, we will not offer new, competitive quizzes on SQL or PL/SQL or anything else this coming week (we will still put up some of our "deja vu" quizzes). I don't want to set up quizzes and then not give you sufficient time to take them (and you never quite know what's going to happen so....).

Now, those of you who've been to the website know that we use lots of orange (why? Because it's a pleasant color and also is the thematic color of my Oracle PL/SQL books published by O'Reilly Media):


You are probably also very familiar with Oracle's use of red:


Well, do not worry - we are not going to replace all that orange with red. That would make the website unreadable, an assault on the eyes. But come 15 June, our banner will be transformed as follows:


Chills running down my spine....so exciting!

The site will be largely unchanged from current functioning. You will, however, need to accept the Oracle Terms of Use. In addition, since some players may have been using an email address on the PL/SQL Challenge different from their Oracle Single Sign-on email, we will give you an opportunity to synchronize the two accounts:


The "fine print" asks you to authorize us to transfer profile information from the PL/SQL Challenge to your Oracle Profile. We are asking for this, because the PL/SQL Challenge collected all sorts of profile information, some of which is already in your Oracle Profile, which is the "source of truth" at Oracle. So you will no longer be able to provide your name, country or company in the PL/SQL Challenge. Instead this information is stored in your Oracle Profile.

We plan over time to integrate points on the PL/SQL Challenge with OTN community rankings, but that may take a little while to complete. Do not worry, though! All your hard work and dedication on this site will be recognized.

I look forward to a greatly increased level of quiz-taking activity, as well as a broader array of quizzes offered, and I hope you do, too!

Comments

Popular posts from this blog

Quick Guide to User-Defined Types in Oracle PL/SQL

A Twitter follower recently asked for more information on user-defined types in the PL/SQL language, and I figured the best way to answer is to offer up this blog post. PL/SQL is a strongly-typed language . Before you can work with a variable or constant, it must be declared with a type (yes, PL/SQL also supports lots of implicit conversions from one type to another, but still, everything must be declared with a type). PL/SQL offers a wide array of pre-defined data types , both in the language natively (such as VARCHAR2, PLS_INTEGER, BOOLEAN, etc.) and in a variety of supplied packages (e.g., the NUMBER_TABLE collection type in the DBMS_SQL package). Data types in PL/SQL can be scalars, such as strings and numbers, or composite (consisting of one or more scalars), such as record types, collection types and object types. You can't really declare your own "user-defined" scalars, though you can define subtypes  from those scalars, which can be very helpful from the p

The differences between deterministic and result cache features

 EVERY once in a while, a developer gets in touch with a question like this: I am confused about the exact difference between deterministic and result_cache. Do they have different application use cases? I have used deterministic feature in many functions which retrieve data from some lookup tables. Is it essential to replace these 'deterministic' key words with 'result_cache'?  So I thought I'd write a post about the differences between these two features. But first, let's make sure we all understand what it means for a function to be  deterministic. From Wikipedia : In computer science, a deterministic algorithm is an algorithm which, given a particular input, will always produce the same output, with the underlying machine always passing through the same sequence of states.  Another way of putting this is that a deterministic subprogram (procedure or function) has no side-effects. If you pass a certain set of arguments for the parameters, you will always get

How to Pick the Limit for BULK COLLECT

This question rolled into my In Box today: In the case of using the LIMIT clause of BULK COLLECT, how do we decide what value to use for the limit? First I give the quick answer, then I provide support for that answer Quick Answer Start with 100. That's the default (and only) setting for cursor FOR loop optimizations. It offers a sweet spot of improved performance over row-by-row and not-too-much PGA memory consumption. Test to see if that's fast enough (likely will be for many cases). If not, try higher values until you reach the performance level you need - and you are not consuming too much PGA memory.  Don't hard-code the limit value: make it a parameter to your subprogram or a constant in a package specification. Don't put anything in the collection you don't need. [from Giulio Dottorini] Remember: each session that runs this code will use that amount of memory. Background When you use BULK COLLECT, you retrieve more than row with each fetch,