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Let’s Mount …..

When i was introduced t0 JDE the first and foremost thing that motivated me to go for becoming a CNC expert was that it gave me opportunity to work on UNIX.  Its beyond doubt one of the most formidable platforms for any business and i was a lover since my early college days 🙂

One of the biggest differentiating factors in Unix is its file system handling. People coming from the Windows world find it difficult to understand that the file storage has nothing to do with the  drives they see in the explorer but is actually a mounted space allocated from the memory available.  Its this “mounting” that makes any file system available for storage.

Syntax for Mount command is as follows:

$ mount /dev/hda3  /home

This command will “load” the resource or filesystem in disk drive hda3 into the local /home and then /home will have the memory on hda3 for use.

The best part of Mount is that you can not only mount hard drives connected to your server but use ones that are connected to the network as well.  This is what is meant when some one says “the db client is a NAS mount”!!

Remember that there is no registry to be maintained in Unix and we don’t necessarily have to install an application on a particular machine to use it. It’s all about the Environment Variable and the file locations.  So if you have an executable and the right parameters set for it in the environment variable, the executable knows how to take care of itself. It knows exactly where to look for the files it needs to execute.

Now when anyone says that the “db client is a NAS mount”, you can figure out that the DB client is installed on a different machine in the network and that particular drive is mounted in your Enterprise server and the Environment variables on your JDE Enterprise Server are set such that your  server knows where to look for the DB client files when its trying to connect to the DB. As far as both the servers concerned are in the same domain and can reach each other in quick time, this works seamlessly.

The biggest advantage that this brings is maintenance of the supporting Applications. If the company has several hundreds of databases this architecture helps the DB support group to maintain all the db’s on their own servers and all the app teams can just mount the locations. Patching and maintenance is spared of the fragmentation and the upgrades can be handled much more efficiently.

If you want to check all the mount points that are currently there on your server execute the following command:  more /etc/auto_direct

Have fun!!

Let me know if the post gives you a little bit of an insight on Mount as a UNIX feature. You can always check the man pages for details about any UNIX command. My intention over here was to drive away the initial fear of “what’s this!!” from anyone who is new to the world of Unix & CNC admin.

Topics you will like to read about!

JDE CNC Interview Questions

If you landed up on this page searching for “JDE CNC interview questions”, you are at the right place. Read along to find what they ask, what they intend to ask, what they thought they were asking, what they cannot ask and how you should answer, what you should say in case you can’t answer or should you at all be interviewing for a CNC job and yes, you can thank me later.

The first thing that you should do is to stop searching for the interview questions and believe in the fact that there is no shortcut available to portray yourself as an excellent CNC. It’s not a set of instructions that you should know or a bunch of APIs you should know how to call and refer back to. It’s not the “do one time and forget it was ever coded” type of a job. You just cannot read a few pages and get into a CNC’s pinching shoes. No you can’t!!

CNC is a fire fight. It’s a trek through thorny bushes with a low quality slipper on in half pants on a dark night, may I add, without a torch. No, I am not over exaggerating a wee bit. Tell me if you can wake up in the wee hours of the night after you have had a three quarters of a large pizza and a couple of beer bottles to trouble shoot a failed package build or a hung UBE. Or get interrupted on a date for a question regarding why a UBE runs slow from citrix but fast from office. I don’t see any one nodding in affirmation. Yes, this is just a glimpse of a CNC’s work.

A CNC’s job requires a different attitude and a keen eye. It needs a person who loves technology to the extreme and is not bothered to hear complaints about it day in and day out. In fact, any complaints regarding a system to him, is an opportunity to sell an upgrade, a need to get more people involved. A CNC has to be a social butterfly and should be able to convince anybody and everybody that he is in control even in face of a catastrophe. He should know the system inside out rather than outside inwards.

So if you are asked to tell about package build, don’t act like it’s just a job that the dumb guy does at a developer’s command every now and then in your project. Rather be prepared with what’s an err file and how and when does the sts gets created. Know your F91300 when talking about schedulers and remember to talk about platform independence when trying to explain what’s so special about JDEdwards. If you are among the ones who cannot tell what’s the security type of a JDEdwards setup when the security server is not running, CNC is not for you. You just cannot handle the curve balls a CNC job throws at you if you have a unidirectional knowledge. Rather than looking for specific questions and answers invest your time in learning the system more. Learn to appreciate the technology within. Once you have enough respect for the system, you can go for any interview that a CNC job asks for. You will be ready for it.

Please remember that the views expressed are solely my own and I do not guarantee any success. But yes at least if you read this before posting for the quintessential “JDE CNC interview questions” in any JDEdwards forum, it will surely save you from some blushes.

If any CNC gurus land up here, please feel free to leave me a comment. And help me describe the job we all love (no I am not being sarcastic) with better examples than mine.

To all the buddying CNC’s , good luck !!

Julian Date and its sql conversion..

Time and again we pull up UPMJs from the tables via backend and need to convert the date that gets pulled into Gregorian. Following query when appended to any date column in a jde table will give the Gregorian date for the corresponding Julian:


– where XXXXXX is the column name to convert.
– this only works on 19th century onwards.

If you are more comfortable with XLS following are the two conversion formulae that will help:

=DATE(IF(0+(LEFT(A1,2))<30,2000,1900)+MID(A1,2,2),1,RIGHT(A1,3)) where A1 is your date in Julian

="1"&RIGHT(YEAR(A1),2)&TEXT(A1-DATE(YEAR(A1),1,0),"000") where A1 is your date in gregorian.

Sp24 Special Dep Server Config..

In line with my last post on SP upgrade on Unix machines, here’s a bit on the special configuration that comes with SP24. Its only needed if you have Vista or Win7 client machines. A few changes have been made to the files being placed under the C: and C:\Windows directories. Since both vista and win 7 restrict programs from accessing these DIR hence JDE has developed symbolic links. Now these Symbolic links are created by the new E1InstallService which needs to be configured on the Dep Server. After building the full package post-SP-upgrade, just before you are about to install a Vista 0r a Win 7 client follow the following steps to enable this service:

1. In the Install.inf on the Dep Server add the following line: OracleE1InstallService={DEP_SERVER_PATH}\E1ServiceInstallation,Setup.exe,/s

2. Create a OracleE1InstallService_silent_setup.inf under E1InstallService folder with the following lines
WorkstationDirPath = [your path under c:\Programfiles]
LaunchPath= {DEP_SERVER_PATH}\OWCinstall\setup.exe
AutoStart = 1

3. Add your user groups under the [E1GlobalGroup] section of the install.inf. Not doing so will result in a dialog box being thrown to alleviate user privs when the user tries to log in a win7 fat client.

4. Now you are all set to install a fat client on a vista or a win 7 client with sp 24.

Firefox Sync… a real make-life-easy feature..

Ohh yess.. this feature of Firefox deserves a real good shout out and is in every way remarkable for people who keep changing PC.. read.. keep getting forced to change PC’s. Its the next level to exporting-importing bookmarks … its Syncing your entire Internet ecosystem with your hand held device such that you can sync it with any other device you need to use Firefox on.

If you use Firefox 3.6.* you need to get the “Firefox Sync” Add-on installed to begin using this feature or if you use Firefox 4 beta its there by default. Sync not only moves the book marks between systems but also the stored passwords as well as the cookies. When you install the add-on it asks you to register and then enter a pass phrase for encrypting your data. Once done, all your bookmarks along with the passwords and the cookies are transferred to the Firefox server in an encrypted format. The beauty of the system is that even if you forget the pass phrase used, it stores the encrypted key on your system and it can be used anytime you are trying to sync another device.

The next step is to install the iPhone app Firefox Home and sign in with the user id created for Sync. Once through, all the data is then available on your phone and ready to be synced with any other PC you need to use Firefox on.

There is currently no app for the Android platform because Mozilla is working on Fennec, the complete firefox explorer for android. So there is Hope 🙂