HollyGhozi

BagimuNegeri Project

hollyghozi — Tue, 20 Oct 2009 07:53:22 +0000

Recently, I and some people who concern on develop Indonesia, gather and create a project. We called it as BagimuNegeri Project. The project is mainly to create an open, professional, integrated, trusted and transparent web scholarship hub application system.

The detail of presentation, and if I can say it as a proposal is below:

BagimuNegeri Project

View more presentations from BagimuNegeri Project.

PowerHub JDBC Log

hollyghozi — Tue, 15 Sep 2009 07:13:09 +0000

I’m supporting CDS in Oil Company based in the Netherland. CDS is a suite of application, one of the application is PowerHub.
If I face a problem, I’ve to debug the PowerHub. One of method is to use log4jdbc.

What I do is:
1. Download the log4jdbc4-1.2alpha2.jar, and put into $PE_HOME/jars
2. Download from SL4J the compress file: slf4j-1.5.8.tar.gz. Extract slf4j-api-1.5.8.jar and slf4j-simple-1.5.8.jar from the compress file, and put into $PE_HOME/jars
3. Modify $PE_HOME/conf/pe_dic.props, remark the old value and change the line:
#pe_dic.Url=jdbc:oracle:thin:@myoraclemachine:1521:PHDIC pe_dic.Url=jdbc:log4jdbc:oracle:thin:@myoraclemachine:1521:PHDIC #pe_dic.Driver=oracle.jdbc.driver.OracleDriver pe_dic.Driver=net.sf.log4jdbc.DriverSpy
4. Restart the PowerHub

You’ll need to check your $PE_HOME/logs/pe_dic-server.log, to see the additional jdbc log messages.
Below is the snippet of the log file:
......... 11824 [main] INFO jdbc.audit - 1. Connection.isClosed() returned false 11824 [main] INFO jdbc.audit - 1. Statement.new Statement returned 11824 [main] INFO jdbc.audit - 1. Connection.createStatement() returned net.sf.log4jdbc.StatementSpy@2e67cd84 11824 [main] INFO jdbc.sqlonly - SELECT upper(d.DATASTORE_NAME),c.DATABASE_S,c.DATABASE_NAME,c.TYPE,c.DRIVER,c.URL,c.TWO_TASK,c.SEQ_NAME,c.CLASS_NAME,c.PRIVATE FROM SLG_DATABASE c, SLG_DATASTORE d WHERE c.DATASTORE_S=d.DATASTORE_S ORDER BY d.DATASTORE_NAME,c.DATABASE_NAME

11833 [main] INFO jdbc.sqltiming - SELECT upper(d.DATASTORE_NAME),c.DATABASE_S,c.DATABASE_NAME,c.TYPE,c.DRIVER,c.URL,c.TWO_TASK,c.SEQ_NAME,c.CLASS_NAME,c.PRIVATE FROM SLG_DATABASE c, SLG_DATASTORE d WHERE c.DATASTORE_S=d.DATASTORE_S ORDER BY d.DATASTORE_NAME,c.DATABASE_NAME {executed in 9 msec} 11833 [main] INFO jdbc.resultset - 1. ResultSet.new ResultSet returned 11833 [main] INFO jdbc.audit - 1. Statement.executeQuery(SELECT upper(d.DATASTORE_NAME),c.DATABASE_S,c.DATABASE_NAME,c.TYPE,c.DRIVER,c.URL,c.TWO_TASK,c.SEQ_NAME,c.CLASS_NAME,c.PRIVATE FROM SLG_DATABASE c, SLG_DATASTORE d WHERE c.DATASTORE_S=d.DATASTORE_S ORDER BY d.DATASTORE_NAME,c.DATABASE_NAME) returned net.sf.log4jdbc.ResultSetSpy@20e5ace9 11833 [main] INFO jdbc.resultset - 1. ResultSet.next() returned true 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(1) returned AOI_SHAPEFILE 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(2) returned 1263 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(3) returned AOI_SHAPEFILE 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(4) returned shapefile 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(5) returned dummy 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(6) returned dummy 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(7) returned dummy 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(8) returned seq 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(9) returned null 11833 [main] INFO jdbc.resultset - 1. ResultSet.getString(10) returned N 11833 [main] INFO jdbc.resultset - 1. ResultSet.next() returned true .............
From the log file, you can see that the PowerHub tries to read the dictionary to get the databases information…

Couple of OpenWorks variables

hollyghozi — Wed, 12 Aug 2009 13:46:34 +0000

Today, I’ve learned two OpenWorks environment variables.
1. OW_DEFAULT_DISTRICT
You will have to set the value of this environment variable, if you want to set the default DISTRICT.
export OW_DEFAULT_DISTRICT=OWSIDEAST
After you set the variable, then start your OpenWorks > Project Status, you’ll see the DISTRICT already been choosen.

2. OW_ADMIN_UTILS_PW
You will need to set the value of this environment variable, if you change the password of OW_ADMIN_UTILS.
export OW_ADMIN_UTILS_PW=owadminutilspassword

Cannot find modules error when try to install

hollyghozi — Wed, 05 Aug 2009 13:33:47 +0000

We’re installing PowerHub using its installer in Linux machine. The installer is built using InstallAnyWhere, that use JRE inside the installer.

The problem happen when we try to install as a user which its home directory is not mounted. We tried to set the HOME to other directory by setting up HOME environment variable. But, we got:
No module find error

Then we try to debug the installation by:
sh -x setup.bin
It come back with a lot of debug messages, and at the end we will see a line with:
CLASSPATH=/tmp/install.829388/jar/... exec /tmp/install.829388/jre/bin/java ....

What we did is to manipulate the user home by
$export CLASSPATH=/tmp/install.829388/jar/... /tmp/install.829388/jre/bin/java -Duser.home=/tmp/tmpdir ...
This way, we will force the installer to use different HOME directory

LD_ASSUME_KERNEL to set thread library that will be used by JVM

hollyghozi — Tue, 14 Jul 2009 16:16:48 +0000

My first aquintance with this environment variables when I was installing Oracle 9i. The notes that written by Werner Puschitz is my oracle installation guidance, back on my early days. Now, I’ve to deal with the same environment variable again.

As a reminder to myself, the LD_ASSUME_KERNEL should be set as:
# Set the LD_ASSUME_KERNEL environment variable only for Red Hat 9, # RHEL AS 3, and RHEL AS 4 !! # Use the "Linuxthreads with floating stacks" implementation instead of NPTL: export LD_ASSUME_KERNEL=2.4.1 # for RH 9 and RHEL AS 3 export LD_ASSUME_KERNEL=export LD_ASSUME_KERNEL=2.4.19 # for RHEL AS 4
Honestly, I don’t know why we have to set differently between RH9 & RHEL AS 3 vs RHEL AS 4. I’ll do it anyway.

As I read from the Red Hat Release Notes, it says:
export LD_ASSUME_KERNEL=2.4.19 — Linuxthreads with floating stacks export LD_ASSUME_KERNEL=2.2.5 — Linuxthreads without floating stacks

Once we set the environment, we can check which thread library that active, we can use ‘getconf GNU_LIBPTHREAD_VERSION’ command as follow:
bash-3.00$ unset LD_ASSUME_KERNEL bash-3.00$ getconf GNU_LIBPTHREAD_VERSION NPTL 2.3.4 bash-3.00$ export LD_ASSUME_KERNEL=2.4.1 bash-3.00$ getconf GNU_LIBPTHREAD_VERSION linuxthreads-0.10 bash-3.00$ export LD_ASSUME_KERNEL=2.4.19 bash-3.00$ getconf GNU_LIBPTHREAD_VERSION linuxthreads-0.10 bash-3.00$ export LD_ASSUME_KERNEL=2.5.2 bash-3.00$ getconf GNU_LIBPTHREAD_VERSION NPTL 2.3.4 bash-3.00$ unset LD_ASSUME_KERNEL bash-3.00$ getconf GNU_LIBPTHREAD_VERSION NPTL 2.3.4

Information about NPTL can be found in wikipedia.

ITIL V3 On One Page

hollyghozi — Tue, 07 Jul 2009 15:09:00 +0000

I always admire people that able to simplify things by putting together some knowledge into single page. I recently found this website: traffix.de, that contains ITIL information in one page.

I download it, and nail it in my office desk wall. So, it’ll remind and guide me how my work should like.

I wonder if there’s such form (knowledge on a page) for other department. Could you please let me know if you find it?

Java: SCJP certified me as Java-nese!

hollyghozi — Sun, 05 Jul 2009 16:05:04 +0000

It’s been quite some time since I haven’t updated my blog. I need to prepare myself for my SCJP Exam Test. After months of studying, I finally passed the SJCP exam test. Now, with the Java Certification in my hand, I’m officially javanese that not only speak Java natively but also do Java programming! Yiihaa!

I’ve to confess that I don’t have enough experience in Java Programming nor enough time to study. And it’s completely different beast compare to my other certifications (RHCE and OCP DBA) that merely IT infrastructure exams.

What I’ve done to get the certification is:
1. Learn about the SCJP it self. I print the page, and nail it to my office wall. So I can read the it whenever I’m in office.
2. Browse Amazon, try to find the best SCJP book available. Based on its reviews, I decided to buy Katherine Sierra SCJP Book. Because, I reside in The Netherlands, I ordered the book via bol.com, and received the book within 3 days.
3. Followed the book suggestion, I photo-copied the review part of each chapter. I read this when I’m on the tram on the way to and from office. I started to do this since October 2008.
4. On January 2009, I read the book completely. Finally!
5. But, my confident level still didn’t increase. Until, there’s information in the sun website that if we buy the voucher before June 2008, we’ll have a free retake exam. This boost my guts and also my learn.
6. I bought the Voucher from Sun NL. It cost 235 EUR + VAT.
7. I go to Prometric website, to register the exam. I chose the nearest exam location, which is 500 meter away from my office.
8. A day before the exam, I took a good night sleep. In the morning, I felt my self fresh, and went to exam location.
9. It’s a long exam, 3.5 hours! I used this full long time to do the exam 9 passes, until I ran out of time. After click finish, it didn’t show my result on the computer screen. It’s different with my OCP, that show the result as soon as you click finish. I went to the admin, and she congratulated me that I passed the exam. I still couldn’t believe it! Alhamdulillah!

Now, since I’ve passed the exam. I feel lighter, seems that the whole burden that I’d carried over years has gone. I need to decide for my next goal. I would like to get back to academic things, but I still don’t know how to do it, any idea?

PowerHub: Installation Error with ‘/tmp does not have enough disk space’

hollyghozi — Mon, 18 May 2009 12:20:14 +0000

When I’m installing PowerHub, I encounter the error message:
WARNING: /tmp does not have enough disk space! Attempting to use /glb/home/s_peam01 for install base and tmp dir. Extracting the JRE from the installer archive... The included VM could not be extracted. Please try to download the installer again and make sure that you download using 'binary' mode. Please do not attempt to install this currently downloaded copy.

The work around is to set IATEMPDIR environment to location that has sufficient space
$ export IATEMPDIR=/glb/apps/3rdparty_test/tmp

JAVA: Encrypt Your Password

hollyghozi — Mon, 18 May 2009 10:21:51 +0000

I’ve been dealing with some java application that connect to multiple databases. All the database information are stored in properties file. This includes the password as well. I stumbled upon the Cryptix.
I’m able to encrypt and decrypt using several lines of code as follow:
byte[] bytes = passwordString.getBytes(i); Security.addProvider(new Cryptix()); RawSecretKey key = null; key = new RawSecretKey("Blowfish","Holly's secret key to unlock".getBytes()); Cipher cipher = Cipher.getInstance("Blowfish", "Cryptix"); cipher = Cipher.getInstance(cipher, null , new PKCS7()); cipher.initDecrypt(key); System.out.println(new String(cipher.crypt(bytes)));
To learn more about Cryptix, you can read this FAQ.

Bash: Send HTML Email from Linux Command Line

hollyghozi — Thu, 14 May 2009 18:07:55 +0000

I’m trying to send an HTML formatted email from Linux Command line. Previously, I use mailx to send the email, but it’s only allow us to send plain text email. Luckily, I came across to ’sendmail’. After testing couple of time, I’m finally able to send HTML formatted email. The code as follow:
(cat < Subject: Title of the email MIME-Version: 1.0 Content-Type: text/html Content-Disposition: inline EOCAT cat htmlfile.html) | sendmail toemail@hollyghozi.com
As you see in my code above, there’re two parts of the email that I combine into one and send using ’sendmail’.
- Header: the first ‘cat’
- Body: the second ‘cat’ is reading ordinary HTML file
and both redirect to sendmail that will send an HTML to recipient.