This is to address specific question raised in my Oracle Application Express Application Development class.  The question was on features of APEX 4.1.

To address the question properly I think it is best to quote the Statement of Direction from Oracle regarding APEX 4.2:

Oracle Application Express 4.2

Oracle Application Express 4.2 will focus on enhancement to existing functionality and additional capabilities to support applications running on mobile devices. Application Express 4.2 is planned to incorporate the following:

• Mobile Applications – Enhanced themes and HTML templates to enable developers to declaratively create mobile applications and/or mobile pages.
• Charts – Incorporate HTML 5 charting capabilities.
• Web Services – Provide declarative specification of RESTful Web services mapped to SQL and PL/SQL.
• Application Deployment – Provide enhanced capabilities for packaging and distributing APEX applications to improve protection of intellectual property rights and ease customization.
• Numerous functional and performance improvements.

So the much anticipated Mobile app themes and templates are on their way.  The question is when would they be here?  I am not sure if at this point anyone knows, but I will sure update this page as soon as I have any concrete date to share with you.

APEX training

You can join my APEX training classes at DesTech in Toronto.  The course descriptions and the shcdules are posted on DesTech’s site.

• Oracle Application Express: Developing Web Applications
• Oracle Application Express: Advanced Workshop

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Oracle APEX 4.2 Features

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Here are the steps to capture your Oracle SQL trace file that includes the value of the bind variables.

Alter session set statistics_level=ALL;
Alter session set max_dump_file_size=UNLIMITED;
Alter session set events ’10046 trace name context forever, level 12‘;

var g_city char(20)

begin
:g_city := ‘Toronto‘;
end;
/

select * from customers where cust_city = :g_name;

alter session set events ’10046 trace name context off’;

Open up the trace file and search for string “Bind” and followed by value and of course the value.  Not the prettiest output but it does not the job;

BINDS #2:
Bind#0
oacdty=96 mxl=128(90) mxlc=00 mal=00 scl=00 pre=00
oacflg=03 fl2=1000000 frm=01 csi=873 siz=128 off=0
kxsbbbfp=006061e4  bln=128  avl=30  flg=05
value=”Toronto “

Recall that in Oracle 11g you can provide an identifier for for your trace file to ease the pain of locating the right trace file.

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Oracle Database – SQL trace & capturing the value of bind variables

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What options do you have when users are complaining about the performance of applications running on WebLogic?

One very useful option is the capability of generating, gathering, and analyzing diagnostics data about WebLogic servers to find out and fix performance problems.

The WebLogic Diagnostic Framework – WLDF

The WebLogic Diagnostic Framework (WLDF) is a set of components orchestrated together to collect, archive, and access diagnostic information about a WebLogic Server instance and its applications.

Using WLDF services, diagnostic data generated by a running server and the applications deployed within its containers can be:

• Created
• Collected
• Analyzed
• Archived
• Accessed

By analyzing this diagnostic data, you can look into the run-time performance of WebLogic servers and its applications, isolate and solve performance problems.

Architecture

The WLDF Console Extension

The WLDF Console Extension provides a set of visual tools you can use to directly manipulate objects to display diagnostic data about WebLogic Server instances.

WLDF Console Extension Example

After starting up WebLogic and still in an idle state:

The number of execute threads remains constant at 3.

There are zero queued requests.

As the load starts to ramp up, more execute threads are spawned and at some points it time requests have to wait to be executed.

Conclusion

WLDF and the console extension can be extremely helpful while troubleshooting WebLogic server performance problems.

You can learn mote about WLDF by attending the WebLogic Monitoring and Performance Tuning course.

The greatest place to take such training is DesTech in Toronto, Ontario.

Here is a link to the Oracle WebLogic Monitoring and Performance Turning course by Oracle University and delivered by Destech.

Feedback

Let us know how you have been using WLDF, what you like about it and what challenges you have faced for utilizing WLDF.

You can send your feedback online at www.2dev.com or by sending us an email at feedback@2dev.com.

Download

Oracle_WebLogic_Monitoring_WLDF.pdf

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Oracle WebLogic Server -WebLogic Diagnostic Framework – WLDF

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Information Technology Project Management Opportunities

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Canadian Project Management Opportunities

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If you believe that the passing the PMP exam can be treated as a project, then you can only increase your chance of passing this exam by following project management processes. You can read the full details about this approach on the paper listed below.

A Project Managment Approach to Passing The PMP Exam, By Marcos Cubric & Payam Moghtader

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Passing PMP Exam PMI Style

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Oracle Resources, Tips and Links

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