XGR Webcam from CNA

So I lost my driver CD for my XGR webcam I bought at CNA.

After doing some googling I found these drivers which sadly did not work:

http://www.comstarsa.co.za/tmp/

I did however find out the the webcam is a Vimicro VC0321

And got the driver here:

http://download.cnet.com/Vimicro-USB-PC-Camera-VC0321/3000-2110_4-104729.html

LDAP DN Characters

Ok so I need to clean up a String that needed to be a DN.

This post proved very useful: http://www.rlmueller.net/CharactersEscaped.htm

Backup copy

Oracle SQL Developer 3 on Ubuntu

1) Download RPM from Oracle
2) Alien RPM with -k option
3) Install deb with dpkg -i
4) Create file .sqldeveloper/jdk
5) Put this in the file:
/usr/lib/jvm/java-6-sun
6) Make sure you have sun-java6-jdk installed

Run sqldeveloper :)

Cool LDAP Tool

http://www.novell.com/communities/node/8652/gawors-excellent-ldap-browsereditor-v282

Ubuntu Install Log

This is my install log for my Ubuntu 10.10 install.

1) Clean install from USB, default settings.
2) Install ubuntu tweak -> move close, maximise, minimise btns to other side of window.
3) Install codecs.
4) Install Firefox 4.
5) sudo apt-get install flashplugin-nonfree
6) apt-get install ubuntu-restricted-extras
7) sudo apt-get install build-essential
8) download and install VMware workstation
9) following this guide to get VMware working -> http://www.debuntu.org/how-wmware-workstation-7.1-ubuntu-maverick-meerkat-10.10
10) install drop box client
11) change firefox start options to: "firefox -ProfileManager -no-remote" and create no-proxy profile in firefox
12) sudo apt-get install vpnc network-manager-vpnc
13lucky number 13, trying to setup vpn but "no valid secrets" message, sadly time for reboot :(
14) reboot did the trick vpn up and running :)
15) did some digging here to get my mic louder, http://ubuntuforums.org/showthread.php?t=1245767, but somehow after sudo apt-get install padevchooser the mic seemed to work better :)
16) did an online update (excluded kernel update)
17) did this to get command prompt here -> http://www.watchingthenet.com/add-open-command-prompt-here-functionality-to-nautilus-in-ubuntu.html
18) install Novell Designer 4 followed debian-based install instructions
19) download eclipse php
20) uncomment "deb http://archive.canonical.com/ubuntu maverick partner" from /etc/apt/sources.list and run apt update
21) sudo apt-get install sun-java6-jdk
22) sudo apt-get install bzr-xmloutput
23) run php ecplise and install BzrEclipse (http://wiki.bazaar.canonical.com/BzrEclipse/Installation)
24) download and install soap ui

Kanu Red Wine

Some good red wine ->

Samsung LCD Locked Settings

To unlock a locked Samsung LCD Monitor child lock hold the menu button for 5 seconds. :)

Oracle Insert Statement Containing & (Ampersand)

So I needed to insert some data into an Oracle DB and found it was having issues with the ampersand (&). So I did some digging and found that before my insert statement I just execute the statement:


set define off

This proved very handy :-)

Source: http://forums.oracle.com/forums/thread.jspa?threadID=466604

Novell RBPM Best Engine Settings

Ok so I've been trying some of the settings for the workflow engine and found that these seem to work the best for us:

What I have however found is with about 5000 workflow requests the system does seem to choke a bit. I would recommend giving some good spec server to the server where you are going to run the workflow engine and assign another server as the 'front-end' server. This way the user experience should not be affected.

Getting JSON and JQuery .getJSON to work in IE8

To no surprise my code that was working 100% in FF died a horrible death in IE8.

Here's what I had to do to get it to work.

1) Set Header to:

response.setContentType("text/javascript; charset=UTF-8");   

Source: http://stackoverflow.com/questions/3517608/why-isnt-this-simple-bit-of-jquery-getjson-working-in-ie8

2) Prevent I8 from caching my Ajax requests:

$.ajaxSetup({ cache: false });
$.getJSON("/MyQueryUrl",
   function(data) {
     // do stuff with callback data
     $.ajaxSetup({ cache: true });
   });

Source: http://stackoverflow.com/questions/264216/getjson-returning-cached-data-in-ie8

3) Add JSON support to IE8

Basically just include json2.js in my script. 

Source: http://www.json.org/ 

Don't we all just 'love' IE

Getting back into Java

What a day! I've been doing some Java dev again and its amazing to struggle with the differences between PHP and Java. Although I originally started with C/Java I've really become almost lazy in some of my PHP practices. PHP being a 'scripting' language makes life easy as you don't have to cast everything in a 'type'. You also don't need to use good OO, which I guess you could say is a down side.

During my exploration with Java over the last couple of days I've come across a couple of problems and solution that I thought I'd write about here.

First problem that cropped up was that Eclipse kept on crashing. Some really weird error but after a bit of Googling I found the solution. Basically the problem was causing by having two versions of xulrunner installed. A quick 'sudo dpkg --remove xulrunner-1.9.1' got the problem sorted. Here's a ref to some a posting about it: https://bugs.eclipse.org/bugs/show_bug.cgi?id=303372 and http://www.eclipse.org/forums/index.php?t=msg&goto=539642&

Second thing I decide to do was give Eclipse some more memory, by changing my run.sh to ./eclipse -vmargs -Xms1024m -Xmx1024m  -XX:PermSize=256m  -XX:MaxPermSize=512m

Next error I run into was Eclipse moaning about Jboss taking too long to start. So had to edit Jboss setting for this. Here's a screen shot on where to find the setting:

Basically you need to right click on the server in the button pane to bring up these properties. I also find it very difficult to find the correct settings for stuff in Eclipse.

Next thing I needed a bit of an update on was Vectors. Well I've been using Vectors for a while and they seem a bit clunky. So I decided to check out ArrayLists. The nice thing with ArrayLists is that they are quicker than Vectors and I found a really cool one liner to convert an ArrayList back to String array.

String[] yourArray = (String[])yourList.toArray(new String[yourList.size()]);

This also works for any other object type.

Ok, on to the next thing. JSON. So I've been playing with JSON and JQuery for awhile but never used it in Java. I first tried to use the standard JSON libraries but found them a bit of a pain. Then I found Gson (http://code.google.com/p/google-gson/). This worked much better and I was able to convert my Object array to JSON with two lines of code:

Gson gson = new Gson();       
String json = gson.toJson(resources);

Ok next thing I found out was really crazy. It took me about an hour to troubleshoot what the heck was going on here. So the reason I'm doing all this Java dev is so that I can plug a custom approval form into Novell's Roles Based Provisioning Module (RBPM). The only thing they don't tell you in this really cool article (http://www.novell.com/communities/node/9210/using-jquery-identity-manager-roles-based-provisioning-module-workflow-forms) is that if you use a HTML field type, the content of the HTML is obtained only after the page is loaded. Which results in alot of fun and games when using JQuery with dynamic content thats not on the page when .ready() function runs. So for now I would highly recommend make use of the TEXT field type in RBPM. This field is loaded already on the page and no .live() Jquery is required. I do however recommend using .live() when re-writing a page with Jquery and needed to keep track of changing items.

Any way think thats more than enough for one day.

Cheers.

Listen to Radio 702 on Ubuntu

Just use this one simple command:

mplayer mms://196.35.64.36/702_16

Oracle and PHP

Today seems to be the day the Oracle DB in Dev would start giving problems. I was running an SQL command from my PHP script, but it was never returning results. The SQL was an update command. I found this very strange as I could run the exact same command in Oracle SQL Developer. After alot of hair pulling I found that Oracle SQL Developer had a 'lock' on the table where I was trying to run the update SQL command. Once I closed // committed the outstanding transaction in SQL Developer my PHP script run fine. The problem I have however identified here is that there does not seem to be any may using the OCI library with PHP to put a time limit on the SQL query (more digging required). So I guess for now I may try putting a limit on the PHP script, but I'm really hoping there's some way to put a time limit on the SQL query to Oracle from PHP.

The Gloden Era

Just had to post this one :-)

Solaris and ldapclient with Active Directory (AD)

Been working on getting Solaris to auth to AD, not really out of choice, but hey I guess sometimes you got to do what you got to do.

Here is the ldapclient command that works with AD:

ldapclient  -v manual \
-a followReferrals=false \
-a "defaultServerList=10.12.28.5" \
-a credentialLevel=proxy \
-a authenticationMethod=simple \
-a proxyDN=cn=ldapproxyuser,cn=users,dc=voc,dc=iam \
-a proxyPassword=proxypassword  \
-a defaultSearchBase=dc=voc,dc=iam \
-a domainName=voc.iam \
-a attributeMap=group:userpassword=userPassword \
-a attributeMap=group:memberuid=memberUid \
-a attributeMap=group:gidnumber=gidNumber \
-a attributeMap=passwd:gecos=gecos \
-a attributeMap=passwd:gidnumber=gidNumber \
-a attributeMap=passwd:uidnumber=uidNumber \
-a attributeMap=passwd:homedirectory=unixHomeDirectory \
-a attributeMap=passwd:loginshell=loginShell \
-a attributeMap=shadow:shadowflag=shadowFlag \
-a attributeMap=shadow:userpassword=userPassword \
-a objectClassMap=group:posixGroup=group \
-a objectClassMap=passwd:posixAccount=user \
-a objectClassMap=shadow:shadowAccount=user \
-a serviceSearchDescriptor=passwd:dc=voc,dc=iam?sub \
-a serviceSearchDescriptor=group:dc=voc,dc=iam?sub

Ref: http://mail.opensolaris.org/pipermail/sysadmin-discuss/2008-February/001740.html