[WARN] [rms ] javacall_file_open: _wopen failed for: ... _delete_notify.dat

I can see your head ... You say "I hope there's a solution." It's funny but I realized that some visitors arrived on this blog after placing a google search, mainly including the keyword '_delete_notify.dat.'

The problem is that the page of this blog that has that keyword does nothing to solve this problem. I decided to tour the java forums and wow! no walkthrough. So I have a little something for you.


What is that file  _delete_notify.dat. ?

Weed I do not know ...

No, What you should understand is that:

1 - this issue does not affect your java code

2 - The NetBeans IDE uses as seamlessly deploy OTA when you launch your MIDlet. They thus create a more or less temporary URL that issues the fichier.JAD to your mobile virtual (emulation of the MIDP wireless toolkit).

3 - fichier.JAD says is supposed to be downloaded before execution of the program on the emulator. Notice the line above your error in the console:


Starting emulator in execution mode
Installing result from: http://127.0.0.1:1254/VotreMIDlet.jad


[WARN] [rms] javacall_file_open: _wopen failed for C: \ Documents and Settings \ be \ JavaME-sdk \ 3.0 \ work \ 0 \ appdb \ _delete_notify.dat


- This problem occurs when downloading the emulator to fichier.jad Mobile Wireless Toolkit

4 - Finally, delete_notify is an attribute present in the fichier.jad

So what can you do?

Two smalls things :

- open Fichier.jad  with notepad and delete the lines as:

"MIDlet-Install-Notify, MIDlet-Delete-Notify, MIDlet-Delete-Confirm" (Unless you need it)

- Create with notepad an empty file and name it "_delete_notify.dat" ... copy and paste it exactly where the error claim it. it should work.

List of Database in J2ME

I was finding a complete local database which is compatible with all CLDC & MIDP versions & consisting of Relational Database & also supports SQL query.But i didn't found all in one feature.I have selected J2MEMicroDB as per my requirement.

Below is list of all J2ME CLDC/MIDP Database.

1) Apache Derby
http://db.apache.org/derby/

2) Java DB
http://developers.sun.com/javadb/

3)Floggy
http://floggy.sourceforge.net/

4)mcobject - Perst Lite Embedded Micro-Database for J2ME
http://www.mcobject.com/j2me_database/

5) Openbasemovil
http://www.openbasemovil.org/

6)J2ME Device DB
http://j2me-device-db.sourceforge.net/pmwiki/index.php

7)Mimer Database
http://developer.mimer.com/downloads/index.htm

8)Mobile Query Manager
http://www.midpjdbc.de/test.html
http://www.midpjdbc.de/javadoc/index.html

9)J2MEMicroDB
http://morfeo.upc.es/crom/mod/wiki/view.php?id=16&page=Qu%E8+%E9s+J2MELSDATALIB&gid=0&uid=0

10)mDrawer
http://sourceforge.net/projects/mdrawer/

11)RMS DB Class
http://sourceforge.net/projects/rms-db-class/

12)Micro DB
http://sourceforge.net/projects/microdb/

Let me know which you have selected & discuss it's features,is you have used.

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