It's less than a month away from the Australian conference series and I'm probably about 2 thirds ready for my sessions.
Australia? Yup, the Perth gig will be on 7-8 Nov and the fun continues in Melbourne on 10-11 Nov 2016.
Check out www.ausoug.org.au/connect2016
, then think about that junket. Jokes aside, events like these are the best place to chat to people about Oracle technology, with plenty of sessions to allow (more...)
I'm going to take advantage of the fact I live in a city so remote to many others in this amazing community,
and schedule this post for my local 8am time.
It's seems my schedule didn't work. Not the first fail from blogger...
This might get me as one of the first posts
in what's hopefully an interesting day amongst Oracle bloggers.
Tim Hall, a great producer of resources for Oracle technologists, suggested bloggers new (more...)
My journey into 12c continues
with the use of identity columns
, this time regarding data that had been imported from another database, but sequences haven't been updated.
Ensuring the next number returned from a sequence matches the current value from the table appears to be a common problem, my thoughts are described here
. The biggest trouble is linking up the sequence to the column so we could automate the process.
We can now (more...)
I've been operating with a 12c environment this year and I can see some standard patterns of mine changing.
One is the use of triggers, or lack thereof. I live in a city with a certain evangelist who does not like triggers
, so I was happy to see Sven Weller's "perfect trigger
" post. The answer is: there is no trigger.
Well, it's one thing to say 'create all new tables like this', (more...)
Last week I described a method to make the tooltip on information more accessible to the end user.
Here is how you could make the same information available to touchscreen users.1)
First step, as before
, is to define the HTML Expression of the column to include the title
In this case I also stored my row identifier as an extra data- attribute
<span title="#RECENT_NOTE#" data-key="#ROW_KEY#">#MY_COLUMN#</span>2a)
Create a dynamic action on click (more...)
Quite sometime ago while still on 3.x I described a simple way to add tooltips in a report
using standard HTML in a HTML Expression.
However, it will only appear when hovering over the span content, not anywhere within the table cell.
$('td[headers=my_column] span').each( // for every data cell in the column
This question in my 2015 survey
relates to built-in instrumentation.
Q7. Do you utilise apex_workspace_activity_log (for monitoring/reporting application usage)?
Yes (90) 47%
No (102) 53%
This log table reports details of all page rendering and AJAX process calls. I really like this information, though I would like to be able to add to the output things such as
In addition to the Monitoring pages you'll find in the APEX administration section, I've built (more...)
Despite web pages having been around for quite some time, and users have been given years of affordance
, people still double click on links & buttons in web pages.
This can cause a few issues in an APEX environment as the underlying process may get executed twice, and today I came up with what I thought was a simple, declarative solution.
In my case I had a button that submitted a modal page. I (more...)
This question from my 2015 survey
may pique curiosity among some APEX developers.
Q6: How do you instrument your code?
Hopefully those in the 22% who do not add instrumentation just didn't understand the question.
Instrumentation is another term for adding debugging information to your code. There is plenty of commentary
on this topic and done right it can make tracking down problems a breeze.
It can be as simple as knowing when a procedure (more...)
Recently a fine young gentleman, who shall remain nameless (let's call him Jerry), asked for some assistance he was getting with an error in Oracle APEX.
He had done all the right things in regard to debugging the problem, but didn't know enough about APEX to know which settings to investigate.
I think developers new to APEX need the occasional post like this to give them an idea on how to start looking into a (more...)
I was constructing a fresh app for a presentation idea and I came to think about the prefix people use for Application Items in Oracle APEX.
I've seen a few variations used, and upon asking the question on Twitter (as a poll limited to 4 options), some came back with a few other suggestions.
The final tally based on the replies (we'll (more...)
from the Developer Advocates group asked the following question on Twitter.
My immediate thought regarded features I'd be disappointed to live without. Looking at some other responses I realise that the answer matches Tom Kyte's creed: "it depends".
Here is a collection of responses that I think sums(sql) really well, (more...)
Another preference question in my 2015 survey
fellow should be pretty happy with the top result, but almost half of the "Other" responses said PL/SQL Developer. I used this many years ago while SQL Developer was still being born. Since SQL Developer was free and portable, it was an easy selection, though I only use if for queries, not PL/SQL development. (more...)
Saddened but not surprised to see COALESCE lagging behind NVL.
Why? Because I think coalesce
is a good idea and the modern equivalent of NVL.
I follow @SQLDaily
for useful tips. Oracle SQL evangelist Chris Saxon
runs the feed.
Full and utter credit goes to the gang at CommitStrip, you should check it out.http://www.commitstrip.com/en/2016/06/20/coder-bingo/
I thought a few choice replacements would help Joel Kallman and team rip into what I'm sure will be another stellar set of Sunday Symposium in Chicago.
|Credit to CommitStrip, text modified from original|
We'll be listening around the world, keep your tweet
If you have one record where you want to display multiple columns of information, the 'Value Attribute Pairs - column' report template is pretty nifty.
Some of the packaged applications use this within the breadcrumb bar, above a region display selector, and it looks really tidy.
|Nulls shown with tilde|
Note, I've modified region attribute setting 'Show null values as' to a tilde (~).
But what if I wanted to hide those null values for (more...)
The 'grand algorithm' favoured this particular tweet from Connor McDonald in my 'highlights'.
I found this intriguing considering a side project I've been tinkering on. The solution ended up looking much simpler than a model clause, though I'm going to need to let it digest for a while before I fully understand how
it works. Maybe read (more...)
If you've ever used a PL/SQL dynamic action with the default 'wait for result', you would have seen the following warning if you have the browser console open.
|Text for bots: Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience.|
Consider this scenario of dynamic actions on change of P42_ITEM:
|Synchronous vs Asynchronous server calls|
Next question in my 2015 survey
, how many different ways can we all type "chrome"?
Q4: Which browser do you use for development?
The first free text question, with a long variety of unique results. I haven't analysed the complete list to get a truer result, but the pattern is clear. 3 of the top 5 are Chrome. APEX developers build in Chrome, the application builder is recommended for Chrome, especially during early adopter (more...)
The next question in my 2015 survey
was a high level look at what resources developers use to get through your day.
On a slightly side note, there was an interesting discussion on the science of preferred vs effective learning styles in this podcast
. It reminded me of my scuba diving course where we learnt the content using 5 different methods, which was a great way to ensure everyone understood how to survive in a (more...)