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New APEX Blog

Denes Kubicek - Wed, 2015-07-22 03:33
This is a new blog on APEX. I expect a lots of good stuff there in the future. The last example describes how to modify the Page Designer and move the panes, adjust the layout and simplify the development of an application since accessing element attributes is much easier that way. I think this is worth of looking at and maybe the APEX team considers this as an improvement for the future release.



Categories: Development

NetBeans 8.1 Remote Deployment for WebLogic

Steve Button - Wed, 2015-07-22 00:41
Stoked that NetBeans 8.1 will have support for deployment to remote WebLogic Server instances.

http://wiki.netbeans.org/NewAndNoteworthyNB81#Remote_WebLogic



#lovethistool

The Leap Second is No Laughing Matter (if you have java on an older Linux kernel)

Don Seiler - Tue, 2015-07-21 16:50
Earlier this month we began getting frequent email warnings from our EM12c server that some agents were experiencing read time outs. Then we saw that the emagent java process was using A LOT of CPU, regularly around 500% but sometimes as high as 800% as seen from "top". Restarting the agent did nothing.

I opened an SR with Oracle Support, where I was first instructed to apply a JDBC patch and then a PSU agent patch. No change in behavior.

Courtney Llamas from the Oracle EM team reached out and suggested it might be due to the leap second, directing me to these MOS docs:

  • Enterprise Manager Management Agent or OMS CPU Use Is Excessive near Leap Second Additions on Linux (Doc ID 1472651.1)
  • Leap Second Hang - CPU Can Be Seen at 100% (Doc ID 1472421.1)
The workaround is to restart ntpd (or reboot the server):

# /etc/init.d/ntpd stop
# date -s "`date`" (reset the system clock)
# /etc/init.d/ntpd start


I monitored top while my system admin restarted ntpd and reset the clock. As soon as he did, java CPU usage dropped like a rock.



While I'm incredibly grateful that Courtney provided the solution in basically 5 minutes, I'm even more upset that Oracle Support had me doing everything but for the 20 days that my original SR has been open.

Of course the real joke is on me, since I first reported the error on July 1 and we all joked on twitter how it was probably due the leap second. The fault also lies with me since I failed to notice that our kernel version (2.6.32-220) was still vulnerable to this (fixed in 2.6.32-279). See Maris Elsins' great write-up (which I apparently skimmed too lightly).
Categories: DBA Blogs

NFL Play by play analysis using Cloudera Impala

Nilesh Jethwa - Tue, 2015-07-21 16:13

Who won the most games against which losing team?

 

Read More at: www.infocaptor.com/dashboard/nfl-play-by-play-analysis-using-cloudera-impala

New PeopleSoft Technology Spotlight Series Available

PeopleSoft Technology Blog - Tue, 2015-07-21 12:37

The PeopleSoft Spotlight Series is a new video-based learning resource that will help you get a deeper understanding of our latest Oracle PeopleSoft technologies, features and enhancements.  Watch these videos to gain insight on how you can take advantage of these features in your enterprise.

Senior Strategy Director Jeff Robbins is your host for the Tools and Technology PeopleSoft Spotlight Series.  Jeff introduces each video and summarizes key points covered in the session. Members of the PeopleSoft development organization take you into detail on each subject, helping you plan for, roll out, and gain value from these PeopleSoft enhancements.

The first sessions in our series focus on the game-changing Selective Adoption and the cutting edge PeopleSoft Fluid User Interface. Selective Adoption is the new method by which customers will update and maintain their PeopleSoft systems.  The Fluid UI enables PeopleSoft users to use PeopleSoft applications across form factors. 

Each video takes less than an hour and contains helpful resources. Look for more sessions of the PeopleSoft Spotlight Series in the near future.

Upgrade to Oracle 12c, Get the Huge Trace Files for Free!

Don Seiler - Tue, 2015-07-21 12:12
Last week we began testing a copy of our production database on Oracle 12c (12.1.0.2). This past weekend we were alerted that the disk holding our ADR diagnostic directory was near full. We noticed some pretty big (and recent) trace files there. Then it happened twice more. This last time filled the disk before we could get to it (thankfully only dev, and during the evening), meaning it filled up fast. The largest file was over 18GB and it only took 6 hours to get that big.

I saved the three biggest trace files to a large NFS mount and did a trace file purge just to get our dev database back up. When I looked at those files, I saw they were all sqlplus sessions running the same DELETE statement after reports like this:


----- Cursor Obsoletion Dump sql_id=7q0kj0sp5k779 -----
Parent cursor obsoleted 1 time(s). maxchild=1024 basephd=0xae2a2ca308 phd=0xae2a2ca308
----- Dump Cursor sql_id=7q0kj0sp5k779 xsc=0x7ffbf191fd50 cur=0x7ffbf2702670 -----


At first I thought it was a user session setting some oddball trace event. However our team found DocID 1955319.1 (Huge Trace Files Created Containing "----- Cursor Obsoletion Dump sql_id=%s -----")

Long story short, it's an unpublished bug introduced in 12.1.0.2 with the cursor obsoletion diagnostic dump "ehancement". I don't think they intended this though, even though they did say "Huge". The workaround is to disable it completely, via this hidden parameter:


alter system set "_kks_obsolete_dump_threshold" = 0;


There is this note at the end though:
Note: The underlying cursor sharing problem should always be highlighted and investigated to ensure that the reason for the non-sharing is known and fully understood.Which is definitely good advice.
Categories: DBA Blogs

Apache Drill : How to Create a New Function?

Tugdual Grall - Tue, 2015-07-21 12:04
Read this article on my new blog Apache Drill allows users to explore any type of data using ANSI SQL. This is great, but Drill goes even further than that and allows you to create custom functions to extend the query engine. These custom functions have all the performance of any of the Drill primitive operations, but allowing that performance makes writing these functions a little trickier Tugdual Grallhttps://plus.google.com/103667961621022786141noreply@blogger.com1

A Lot To Listen To

FeuerThoughts - Mon, 2015-07-20 07:40
A Lot To Listen To

Sometimes, if you're lucky,
there is nothing to hear
but the sound of the wind
blowing through trees.

Now you could say:
"That's not much to listen to."
Or you could listen...

Listen
to the rustling, hissing, whispering, sometimes angry sound
of thousands 
of almost silent brushings of leaf against leaf,
of feather-light taps of twig striking twig,
any single act nothing to hear at all
but when the tree is big enough
and the leaves are numerous enough
and the branches reach out 
thinner and thinner
poking out toward the sun
carrying leaves to their destiny,

then you might be able to hear
the sound of the wind
blowing through trees.

It's a lot to listen to,
if you can hear it.




Copyright 2015 Steven Feuerstein
Categories: Development

Beat 39

Floyd Teter - Thu, 2015-07-16 18:00
Let's start today's thought with a tidbit from the Standish Group's 2013 Chaos Report.  In that report, the Standish Group cheerfully shares that IT project success came in at 39%...cheerful because that is an improvement.  In other words, 6 out of 10 IT projects are failing to meet schedule, cost and quality objectives and we're thinking that's good news.  Yikes!!!

If we look at the numbers in SaaS carefully - regardless of vendor - we see a pretty consistent gap between sales and "go live".  Guess how large the gap is?  Yeah, about 61%.  Arithmetic anybody?  Granted that my access to data is somewhat limited here but, even with my small sample size, it's one of those things that make me "stop and go hmmm".

The upshot?  In the developing space of SaaS, I think we may have all underestimated the level of difficulty in implementing those nifty SaaS applications.  At the very least, it seems like we're missing the boat on how to move from vision to achievement.

Enablement.  SaaS customers need tools that ease the implementation and use of the applications.  And preferably things that scale...inventing the tool every time you tackle the project buys nothing but headaches.  But I think good tools for enablement are the key if we're ever going to "Beat 39".

More on this in later posts.  I think I may be focusing on this for a bit.



Oracle Priority Support Infogram for 16-JUL-2015

Oracle Infogram - Thu, 2015-07-16 16:33

Time to Patch!

The British actor David Niven once said: “After 50 it’s just patch, patch, patch”. Technology doesn’t wait until you are 50:

Oracle Critical Patch Update for July 2015

Dear Oracle Security Alert Subscriber,

The Critical Patch Update for July 2015 was released on July 14th, 2015.
Oracle strongly recommends applying the patches as soon as possible.

The Critical Patch Update Advisory is the starting point for relevant information. It includes the list of products affected, pointers to obtain the patches, a summary of the security vulnerabilities for each product suite, and links to other important documents. Supported products that are not listed in the "Affected Products and Components" section of the advisory do not require new patches to be applied.

Also, it is essential to review the Critical Patch Update supporting documentation referenced in the Advisory before applying patches, as this is where you can find important pertinent information. Critical Patch Update Advisories are available at the following location:

Oracle Technology Network: http://www.oracle.com/technetwork/topics/security/alerts-086861.html

The Critical Patch Update Advisory for July 2015 is available at the following location:

Oracle Technology Network: http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html

Important information can also be found at: https://blogs.oracle.com/security/

The next four dates for Critical Patch Updates are:

October 20, 2015
January 19, 2016
April 19, 2016
July 19, 2016

RDBMS


Big Data


WebLogic

OTD active/standby failover, from the WebLogic Partner Community EMEA blog.

And from the same source:


Java


SOA

Managing Idempotence in SOA Suite, from the SOA & BPM Partner Community Blog.

From the same blog comes this interesting series on some of the controversies in the SOA community: SOA Mythbusters

WebCenter

Part 1: An Overview of the Oracle.com Localization Framework in WCS, from PDIT Collaborative Application Services.

From Proactive Support - WebCenter Content: Oracle WebCenter Content (WCC) 11.1.1.8.13 Bundle Patch is Here!

OBIEE


Hyperion

Patch Set Update: Hyperion Calculation Manager 11.1.2.4.003, from Business Analytics - Proactive Support.

Ops Center

New Books in 12.3, from the Ops Center blog.

Oracle Technology

It’s hard to put Jeff Taylor’s Weblog into a single product box, as you can tell from the wide-ranging list of blog posts in this Table of Contents at his blog.

EBS

From the Oracle E-Business Suite Support blog:


From the Oracle E-Business Suite Technology blog:














First patch set (5.0.1) released for APEX 5.0

Dimitri Gielis - Thu, 2015-07-16 16:22
I know some people waiting till the first patch set that comes available after a major Oracle APEX release... today you no longer have to wait, APEX 5.0.1 is now available.

In the patch set notes you can read what changed.

If you're still on APEX 4.x you can go immediately to APEX 5.0.1, you only need to download the latest version on OTN.

If you're already on APEX 5.0, you can download the patch set from support.oracle.com, search for patch number 21364820. Applying the patch took less than 5 minutes in my environment.



This patch set updates the Universal Theme too, so don't forget to update your images folder. When you login in APEX after the patch, it will check if you have the correct images folder, if not it will give you an alert. Although I updated the images directory I still got that alert due to browser caching. Refresh your page and it should be ok.

Note that it's important to be on APEX 5.0.1 when you use APEX Office Print - currently available in beta for a select audience, public release end of this month (July 2015). Behind the scenes we use the APEX_JSON and APEX_WEB_SERVICE packages which got an update in APEX 5.0.1.

And finally, there's a nice new D3 chart available in APEX 5.0.1 called "D3 Collapsible Treemap Chart"


Happy upgrading...

Update 18-JUL-2015: there're still a couple of known issues, please read those too and install some patchset exception when necessary.
Categories: Development

How to Hide Actions in OBPM 12c Workspace

Jan Kettenis - Thu, 2015-07-16 13:17
In this article I explain how to hide the actions in the drop-down in Workspace.

In some situations you may need to hide the actions that are shown in the Actions drop-down in Workspace.


One way to do so is by configuring the access that users with a specific Workspace role have for a specific task (not to be confused with a swim-lane role), by going to the task definition -> Access -> Actions. For example, if you want to disable that an assignee can acquire or reassign a task, you can uncheck the "Acquire" and "Reassign" check boxes in the "Assignees" column.


You can also uncheck the outcomes, for example like the "APPROVE" and "REJECT" actions in the picture above. However, this will make that the assignee cannot choose the outcomes at all, because then the buttons are not rendered either. When you uncheck all outcomes this will practically make that the assignee cannot execute the activity at all, which is probably not what you want. As a matter of fact, you will also not be able to commit the task using the updateTaskOutcome() operation on the TaskService, as you will get an error when tying to do so.



A more practical case for hiding the outcomes from the drop-down menu is where the user should not be able to chose them from there, but should be able to chose the actions using buttons on the screen. An example would be where you need to submit data through the form, because it has to update data in the database directly (instead of via a service call in the process). This you can do through the Configure option in the task definition.


When you check "Require payload review before approval" the user will not be able to chose any action from the drop down. However, the buttons will be available on the screen.

Oracle APEX 5.0.1 now available

Patrick Wolf - Thu, 2015-07-16 06:48
Oracle Application Express 5.0.1 is now released and available for download. If you wish to download the full release of Oracle Application Express 5.0.1, you can get it from the Downloads page on OTN. If you have Oracle APEX 5.0.0 … Continue reading
Categories: Development

Oracle LTRIM Function with Examples

Complete IT Professional - Thu, 2015-07-16 06:00

Oracle LTRIM FunctionThe LTRIM function removes characters from the left side of a string. Learn more about it and see some examples in this article.

Purpose of the Oracle LTRIM Function

The purpose of the LTRIM function is to remove a specified character from the left side of a string. The L in LTRIM stands for “Left”, and is the opposite of the RTRIM or “Right” Trim function.

 

Syntax

The syntax of the Oracle LTRIM functions is:

LTRIM( input_string, [trim_string] )

 

Parameters

The parameters of the LTRIM function are:

  • input_string (mandatory): This is the string to remove characters from the left-hand side of.
  • trim_string (optional): This is the string to be removed from the input_string. If it is not specified, a space is used, and all spaces are removed from the left of the input_string.

Some points to note about LTRIM:

  • If the trim_string is a literal value, you need to include it inside single quotes. For example, to remove an underscore, you need to specify it as ‘_’
  • Both input_string and trim_string can be of data type CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB.
  • The returned value is a VARCHAR2 data type if the input types are CHAR, VARCHAR2, NCHAR or NVARCHAR2, and the returned value is a LOB data type if the input types are LOB or CLOB.
  • The trim_string can be more than one character
  • The function removes each individual value inside trim_string, not the string as a whole. See the Examples section below for more information.

 

Can You Use Oracle LTRIM To Remove Leading Zeroes?

Yes, you can. It’s one of the more common uses for the function that I’ve seen.

This can be done as:

LTRIM(value, ‘0’)

See the Examples section below for more information.

 

Can You Use Oracle LTRIM with RTRIM?

Yes, you can, and it works in the same way as just using the TRIM function.

You’ll need to use one inside the other, and it doesn’t really matter which one is used first.

So, you can use either LTRIM(RTRIM(value)) or RTRIM(LTRIM(value)).

See the Examples section below for more information.

 

Are There Other Ways for Oracle to Trim Strings?

Yes, there are a few ways you can trim strings in Oracle:

  • Use LTRIM or RTRIM
  • Use TRIM
  • Use REPLACE
  • Use SUBSTR if you need more advanced trimming features
  • Use regular expressions

 

Examples of the LTRIM Function

Here are some examples of the Oracle LTRIM function. I find that examples are the best way for me to learn about code, even with the explanation above.

Example 1

This example demonstrates a simple LTRIM with no trim value specified.

SELECT LTRIM('    Complete IT Professional')
AS LTRIM_EXAMPLE FROM DUAL;

Result:

LTRIM_EXAMPLEComplete IT Professional

The extra spaces are removed from the original value.

 

Example 2

This example uses a specific value to trim.

SELECT LTRIM('___Complete IT Professional', '_')
AS LTRIM_EXAMPLE FROM DUAL;

Result:

LTRIM_EXAMPLEComplete IT Professional

The underscores are removed from the original value.

Example 3

This example uses LTRIM with several characters as the string to trim.

SELECT LTRIM('; ; ; ; ; Complete IT Professional', ' ; ')
AS LTRIM_EXAMPLE FROM DUAL;

Result:

LTRIM_EXAMPLEComplete IT Professional

Both the spaces and semicolons are removed from the original value.

 

Example 4

This example uses LTRIM  on data in a table, instead of providing a value.

SELECT country, LTRIM(country, 'U')
AS LTRIM_EXAMPLE FROM customers;

Result:

COUNTRYLTRIM_EXAMPLEUSASAUSASACanadaCanadaUKKUSASA(null)(null)FranceFrance(null)(null)

The capital U is removed from several values.

 

Example 5

This example uses LTRIM on data in a table with several characters in the trim parameter.

SELECT full_address, LTRIM(full_address, '1')
AS LTRIM_EXAMPLE FROM customers;

Result:

FULL_ADDRESSLTRIM_EXAMPLE10 Long Road0 Long Road50 Market Street50 Market Street201 Flinders Lane201 Flinders Lane8 Smith Street8 Smith Street14 Wellington Road4 Wellington Road80 Victoria Street80 Victoria Street5 Johnson St5 Johnson St155 Long Road55 Long Road

The “1” characters are removed from several address values.

 

Example 6

This example uses LTRIM  with 0 as the parameter.

SELECT LTRIM('000Complete IT Professional', 0)
AS LTRIM_EXAMPLE FROM DUAL;

Result:

LTRIM_EXAMPLEComplete IT Professional

The zeroes are removed from the original value.

 

Example 7

This example uses both LTRIM and RTRIM in the one expression.

SELECT LTRIM(RTRIM('___Complete IT Professional__', '_'), '_')
AS RTRIM_EXAMPLE FROM DUAL;

Result:

LTRIM_EXAMPLEComplete IT Professional

The underscores are removed from both sides of the original value.

 

Example 8

This example uses Unicode characers as the trim parameter.

SELECT LTRIM('ééComplete IT Professional', 'é')
AS LTRIM_EXAMPLE FROM DUAL;

Result:

LTRIM_EXAMPLEComplete IT Professional

The accented “e” character is removed from the original value.

Similar Functions

Some functions which are similar to the LTRIM function are:

  • RTRIM – Trims characters from the right of the string. The opposite of the LTRIM function.
  • TRIM – Trims characters from both the left and right side of the string. A combination of LTRIM and RTRIM.
  • SUBSTR – Extracts one value from a larger value. Not really a TRIM function but does something similar.
  • REPLACE – Replaces occurrences of one text value with another.

You can find a full list of Oracle functions here.

Lastly, if you enjoy the information and career advice I’ve been providing, sign up to my newsletter below to stay up-to-date on my articles. You’ll also receive a fantastic bonus. Thanks!

Image courtesy of digitalart / FreeDigitalPhotos.net

Categories: Development

Were you at Alliance, Collaborate, Interact this year, or wished you were?

PeopleSoft Technology Blog - Wed, 2015-07-15 18:40

This year, as well as uploading my PDF presentation, I've uploaded a couple of additional files.

The one you may find interesting is a short form Security Check List.

You can find it here: 

This is a supplement to the Securing Your PeopleSoft Application Red Paper (it includes the link) and it covers a number of points I've discussed with customers over the years. I include most of the check list as slides in my session but the PDF is an expanded set. The check list also contains a number of useful links.

In the discussions with customers we frequently find there are topics they have overlooked because they don't appear directly related to PeopleSoft security, but they are part of the overall infrastructure security and often managed by people outside of the PeopleSoft team. It's more important that as teams are reduced in size, that you build collaborative, virtual teams in the rest of your organization. I hope the check list will also provide the conversation starters to help build those virtual teams.

If you think some of the points are  topics by themselves, let me know and I can work on building out the information.

I appreciate any and all feedback. 

Connecting to DBaaS, did you know this trick?

Kris Rice - Wed, 2015-07-15 16:10
SSHTunneling Trick The new command line is a must try, says 10 out of 10 people that built it.  The tool has sshtunneling of ports built in as described by Barry. This means you can script opening your sshtunnel from the command line and run sql very quickly.  Here's the one I used recently at Kscope15. Now the trick? is that once this port is forwarded, any tool can now use it.  In case

Starting a Process using a Timer with a Duration in Oracle BPM

Jan Kettenis - Wed, 2015-07-15 10:34
In this blog article I explain three options to configure a timer start event based upon some configurable duration.

As far as I know firing a timer based on a duration is only applicable in case of a Timer Event Sub-process. Let me know if you think otherwise.

In case of an Event Sub-process the timer starts at the same moment when the process instance starts. There is no way to change it at any point after that. Given this , you can use one of the following three options that I discuss below. If you know of some oher way, again: let me know!

Input ArgumentYou can use an element that is part of the request of the process. In the following example there is one input argument called 'expiry' of type duration which is mapped to a process variable:

The process variable can then used to start the timer using an straightforward simple XPath assignment:



Preference in composite.xml
You can also configure a preference in the composite.xml file. Such a preference belongs to a specific component, and starts with "preference" (or "bpel.preference", but you can leave "bpel." out). Using the dot as a delimiter you can post-fix that with the preference name to use:

You can then set the timer using the ora:getPreference() XPath function. All these preferences are strings, but if the value is an ISO duration it will automatically be converted to a duration.


Domain Value Map
A third option is to configure the duration using a Domain Value Map or DVM for short. In the following example a DVM file is used for configuration parameters as a name-value pair:

 

The timer can be instantiated using the dvm:lookupValue() XPath function, as show in the following picture:


What to Choose?
This depends on the requirements.

If your consumer should be able to determine the duration, you should pass it on as a request parameter.

If the business wants to change it run-time than using the DVM is the best option. The initial value is determined design-time but can be changed run-time via SOA Composer (the same tool via which business rules can be changed).

Otherwise the composite preference is your weapon of choice. Also for this preference the initial value is determined design-time, but can still be changed after deployment by IT using the MBean Browser in Enterprise Manager.

Another new APEX-based public website goes live

Tony Andrews - Wed, 2015-07-15 07:48
Another APEX public website I worked on with Northgate Public Services has just gone live: https://londontribunals.org.uk/ This is a website to handle appeals against parking fines and other traffic/environmental fines issues by London local authorities. It is built on APEX 4.2 using a bespoke theme that uses the Bootstrap framework.  A responsive design has been used so that the site works Tony Andrewshttp://www.blogger.com/profile/16750945985361011515noreply@blogger.com1http://tonyandrews.blogspot.com/2015/07/another-new-apex-based-public-website.html

APEX 5 - Opening and Closing Modal Window

Denes Kubicek - Wed, 2015-07-15 05:56
This example is showing how to open a Modal Page from any element in your application. It is easy to get it working using some standards like a button or a link in a report. However, it is not 100% clear how to get it working with some other elements which don't have the redirect functionality built in (item, region title, custom links, etc.). This example is also showing how to get the success message displayed on the parent page after closing of the Modal Page.

Categories: Development

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