Skip to main content

Latest Addition to Oracle Database Evangelist Team: Chris Saxon, focus on SQL

Last year (well, last month to be more specific), I announced three new members of the Oracle Database Evangelist Team: Todd Trichler, Natalka Roshak and Dan McGhan.

Today, I have the pleasure of announcing a fourth: Chris Saxon.

Chris Saxon, SQL Evangelist


Over the past ten years Chris has worked as an Oracle developer, DBA and architect. During this time he's built up a passion for interacting with data using SQL and helping others do the same. 

Combining this with a love of games and quizzes, Chris started the design quiz on the PL/SQL Challenge in 2013. 


He's looking forward to helping spread the word about SQL so that people get the most out of their data.


Check out Chris's announcement on his SQLFail blog as well.


As I said in my previous team-expansion announcement, I will make a more "formal" announcement of our team and our plans in Q1 2015, but for now, I did want to share the joyful feeling I feel.


Welcome, Chris! I look forward to a very busy and productive year with you on the team.

Comments

  1. Dan McGhan is the man! Great hires all around. Looking at seeing this team in action and educating developers on why they should look at and understand the Oracle DB and its plethora of features to build next generation applications!

    ReplyDelete

Post a Comment

Popular posts from this blog

Running out of PGA memory with MULTISET ops? Watch out for DISTINCT!

A PL/SQL team inside Oracle made excellent use of nested tables and MULTISET operators in SQL, blending data in tables with procedurally-generated datasets (nested tables).  All was going well when they hit the dreaded: ORA-04030: out of process memory when trying to allocate 2032 bytes  They asked for my help.  The error occurred on this SELECT: SELECT  *    FROM header_tab trx    WHERE (generated_ntab1 SUBMULTISET OF trx.column_ntab)       AND ((trx.column_ntab MULTISET             EXCEPT DISTINCT generated_ntab2) IS EMPTY) The problem is clearly related to the use of those nested tables. Now, there was clearly sufficient PGA for the nested tables themselves. So the problem was in executing the MULTISET-related functionality. We talked for a bit about dropping the use of nested tables and instead doing everything in SQL, to avoid the PGA error. That would, however require lots of wo...

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, ...

Why DBMS_OUTPUT.PUT_LINE should not be in your application code

A database developer recently came across my  Bulletproof PL/SQL  presentation, which includes this slide. That first item in the list caught his attention: Never put calls to DBMS_OUTPUT.PUT_LINE in your application code. So he sent me an email asking why I would say that. Well, I suppose that is the problem with publishing slide decks. All the explanatory verbiage is missing. I suppose maybe I should do a video. :-) But in the meantime, allow me to explain. First, what does DBMS_OUTPUT.PUT_LINE do? It writes text out to a buffer, and when your current PL/SQL block terminates, the buffer is displayed on your screen. [Note: there can be more to it than that. For example, you could in your own code call DBMS_OUTPUT.GET_LINE(S) to get the contents of the buffer and do something with it, but I will keep things simple right now.] Second, if I am telling you not to use this built-in, how could text from your program be displayed on your screen? Not without a lot o...