Important - Linux and Java

Hi!
I'm trying to install j2sdk1.4.0_03-linux-i536 on
Conectiva Linux 7.0. I've already download it a
number of times but the archive seems to be corrupted.
Anyone can give me some help!?
Thanks a lot,
Katia.

Hi!
I tried to install in both ways: RPM in self-extracting file and the Linux self-extracting file.
I tried to install and get a message "corrupted file".
On the third tentative I download them and then saves it in a CD. When I tried to copy the files from the CD for the HD, it copies just a part of the archive and reports a IO error.
I don't know what to do.
Thanks a lot.
Katia.

Similar Messages

Oracle Linux and Java 7u10

Hi all,
I installed Oracle Linux Server 6.3 selecting "software Development System" (java 1.6.0 comes with it).
but I need to use Java 1.7
So I downloaded jdk-7u10-linux-x64.rpm
when I try to install it, I get the following error.
Unpacking JAR files...
     rt.jar...
Error: Could not open input file: /usr/java/jre1.7.0_10/lib/rt.pack
     jsse.jar...
Error: Could not open input file: /usr/java/jre1.7.0_10/lib/jsse.pack
     charsets.jar...
Error: Could not open input file: /usr/java/jre1.7.0_10/lib/charsets.pack
     localedata.jar...
Error: Could not open input file: /usr/java/jre1.7.0_10/lib/ext/localedata.pack
I can't uninstall java 1.6 because other rpm uses it.
Can someone tell me what the "proper" way to install Oracle Linux and Java 1.7 should be?
OR is there a Oracle Linux Server 6.4 coming out soon with Java 1.7 as its default package set ;-)
thanks in advance,
c.w.

You can ignore the errors. The files named in the error lines do not exist in the rpm package, but are there as .jar files
The following works under Oracle Linux 6.3 x86_64 (and probably other versions).
1. Open the following URL in a web browser on your PC:
<pre>
http://www.oracle.com/technetwork/java/javase/downloads/index.html
</pre>
2. Click the JDK download button, accept the license agreement and download the JDE rpm package.
3. Copy the following file to your Oracle Linux server (SFTP):
<pre>
jdk-7u10-linux-x64.rpm
</pre>
4. Login as root and use the YUM utility to install the RPM package.
<pre>
# yum install ./jdk-7u10-linux-x64.rpm
</pre>
5. Register the new installed java version, then change your default Java:
<pre>
# alternatives --install /usr/bin/java java /usr/java/jdk1.7.0_10/bin/java 2
# alternatives --config java
</pre>
Display your default Java version:
<pre>
# java -version
java version "1.7.0_10"
Java(TM) SE Runtime Environment (build 1.7.0_10-b18)
Java HotSpot(TM) 64-Bit Server VM (build 23.6-b04, mixed mode)
</pre>

Taking advantage of the fast linux OS - linux and java

Hello Java Experts;
I read a very interesting article in the news this week about the linux advantage.
A german bank had 32 unix servers. Each at a cost of $50,000 dollars.Together these servers took 17 hours to crunch a calculation.
That bank replaced those 32 unix servers with 40 linux servers at a cost of $3,000 dollars per server. The calculations were done in 11 minutes instead. They were therefore able to move around 10s of millions of dollars that much faster as a result. - basically it allowed them to take 10s of millions of dollars out of reserves that much faster.
Now , does anyone know that story ?
And does anyone know how the linux server cost that much ?
I'm under the impression it is simply because a less expensive piece of hard ware was required -- does anyone know what that hardware was? I believe SUn boxes were running unix previously.
I hear these kinds of stories all time time. I heard that a mainframe running linux is as fast as 10 mainframes. and ibm uses that advantage to sell to clients.
Anyhow -- does anyone have a similar story about running java code on linux as opposed to unix ? or is this type of performance boost limited to certain types of applications.
stephen

This likely has nothing to do with the Linux operating system being any faster than the Unix operating system. I actually read the same article in the paper, and it simply means that by migrating to a free OS that runs on standard PCs, they saw a great performance benefit at a minimal price. I think this is simply attributed to their installing Linux on brand new 2ghz PCs, and their old Unix systems likely being confined to a Sun Solaris box, or another proprietary computer systems. PCs have grown by leaps and bounds, and likely their servers were quite old and had much less processing power than the standard desktop PCs linux allowed them to port to. I personally use RedHat linux 7.3 as my operating system of choice, however it's not because it has any speed benefits over windows.
-Jason Thomas.

I hear audio after leaving the pogo bingo luau room long after signing off from pogo. i have the latest flashplayer for fedora linux and java installed.

as above

Hi audiopaster, that sounds like a lingering sound from another window. Is Firefox completely closed when the audio continues as well?
What I will do is look around and let you know what I see, as I try to reproduce this. However I may need your help to troubleshoot.
Since this is a java game, all java applications running in the browser are allowed through the parameters in the Java Console [http://www.java.com/en/download/help/jcp_security.xml#control%20panel Finding Java Console]
In the console look for the Java section and when you hear the audio continuing to place click View to see what is running. Aldo check the General > Java Cache Viewer, is there a temporary audio file there?
Also what version of java is installed? I did not see any when I tested.
It looks like pogo games do not support Linux [http://help.ea.com/en/article/supported-browsers-for-pogo/#2]
So I looked on stack overflow and found [http://stackoverflow.com/questions/6259077/playing-game-music-in-java-how-to-stop-the-stream-of-data] that certain Audio implementations of java will not terminate on exit is because there may not be a call to stop audio.
This makes me wonder if there is a cookie or session that is still going after you navigate away, this sounds really silly though. Please try to clear your cache if this continues. I will ask on irc with more info as well.

Linux and Java are 64 bit. The native library is 32 bit. Any workaround?

Folks,
I am trying to run some java cipher/decipher programs that rely on native code (code which connects through the network to an HSM box).
The issue is that theboth Linux kernel and JVM are 64 bit. But the native library seems to be 32 bit. I get the following message when trying to run the sample:
Exception in thread "main" java.lang.UnsatisfiedLinkError: jcryptoki (/opt/Eracom/lib/libjcryptoki.so: wrong ELF class: ELFCLASS32)
at java.lang.ClassLoader.loadLibraryWithPath(ClassLoader.java:981)
at java.lang.ClassLoader.loadLibraryWithClassLoader(ClassLoader.java:950)
at java.lang.System.loadLibrary(System.java:453)
at jprov.cryptoki.Cryptoki.<clinit>(Cryptoki.java:38)
at java.lang.J9VMInternals.initializeImpl(Native Method)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:194)
at au.com.eracom.crypto.provider.ERACOMProvider.<clinit>(ERACOMProvider.java:329)
at java.lang.J9VMInternals.initializeImpl(Native Method)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:194)
at SHA512Generator.main(SHA512Generator.java:10)Is there any workaround or should I contact my HSM vendor and ask for a 64 bit version of this native library?

Is there any workaround or should I contact my HSM vendor and ask for a 64 bit version of this native library?That would certainly be the best step so it should certainly be the first one.

Linux and Java sound - map mixers to devices

Hi,
I have a question regarding Java Sound API and Linux. I need to query a list of sound devices and let the user choose one of them for further audio operations. This works using the
AudioSystem.getMixerInfo()call. However, the names of the mixers are not very useful. I find the following mixers:
Intel [plughw:0,0], version 1.0.23
Intel [plughw:0,2], version 1.0.23Is there a way to get better names, similar to what Gnone or KDE sound panels display?
When I run the same code under Windows, the output is much better.

Try the code from the following article:
http://www.developerfusion.com/article/84314/wired-for-sound/

Import statement in .java files and .jsp files

Guys I have few mysteries about this import statement.
Please correct me if I am wrong.
1)Suppose if I have a folder c:\SourceFolder it has one.java and two.java files.If I compile one.java then one.class files is created in c:\ClassFolder .Now two.java uses one of the method of one.java,and without using import statement I am able to compile two.java, and two.class file is created in c:\ClassFolder.I assume that the path of one.class was taken from the CLASSPATH environment variable,hence I there was no need for import statement .........am i right ?
BUT... in My.jsp,which is in C:\JspFolder, if I want to use one.class,then I have to specifically import the class I want to use.That is i have to say
<%@page import="one"%>
and since the classpath is C:\ClassFolder ,it finds one.class in the C:\ClassFolder.(Note that My.class is created in a folder different from c:\ClassFolder )
But I am wondering why was there no need for me to import one.class in two.java.
(Note I am using JDeveloper and Apache server)
Please help.
In this case the pSo I am wondering in JSP why it doesn't take the class I am looking for from the classpath .
Help.

You have to understand Java scoping rules. In the 1st scenario with the two Java files I am guessing neither one of them begins with a package statement. This means that they belong to the default package. When you compile the compiler uses the classpath to resolve method calls looking in the default package since there was no import statement specified in two.java. JSP is a little different. Now I just read this here in these forums a couple of days ago. Since the classfiles generated from the JSP files are not in the CLASSPATH they are loaded by a different classloader. This is why you have to import all references to all classes in the default package.

Import statement in .java files and .jsp files ..correction

Guys I have few mysteries about this import statement.
Please correct me if I am wrong.
1)Suppose if I have a folder c:\SourceFolder it has one.java and two.java files.If I compile one.java then one.class files is created in c:\ClassFolder .Now two.java uses one of the method of one.java,and without using import statement in two.java I am able to compile two.java, and two.class file is created in c:\ClassFolder.I assume that the path of one.class was taken from the CLASSPATH environment variable,hence I there was no need for import statement .........am i right ?
BUT... in My.jsp,which is in C:\JspFolder, if I want to use one.class,then I have to specifically import one.class in My.jsp .That is i have to say
<%@page import="one"%>
in My.jsp.
and since the classpath is C:\ClassFolder ,it finds one.class in the C:\ClassFolder and MyJsp is compiled sucessfully.(Note that My.class is created in a folder different from c:\ClassFolder )
But I am wondering why was there no need for me to import one.class in two.java.
(Note I am using JDeveloper and Apache server)
Please help.

It has to do with packages. Most java classes are in a package, the name of which must conform to its place on the filesystem relative to the classpath. By that I mean that if you have com.mystuff.One.java, it must be in a folder com/mystuff where com is located somewhere in the classpath.
What you've done is a little different. I'm assuming a couple of things:
1. you have no package declaration at the top of one.java or two.java
2. you have the current directory "." in your classpath.
Java has the concept of the "default package", which covers classes without a declared package, and in your case is the current directory.
So when you're in c:\sourcefolder and run the compiler, then "."="c:\sourcefolder", and that directory is part of the default package. No import statements are necessary for classes that are in the same package. This is why two.java can call methods in one.java without an import statement.
When you run your jsp, the "current directory" part of your classpath is not c:\sourcefolder, but some other value (probably the directory you start your jsp engine from) You will have to import all non-java-library classes because the jsp itself becomes a java class, with a package that is determined by the jsp engine.

Import and process larger data with SQL*Loader and Java resource

Hello,
I have a project to import data from a text file in a schedule. A lager data, with nearly 20,000 record/1 hours.
After that, we have to analysis the data, and export the results into a another database.
I research about SQL*Loader and Java resource to do these task. But I have no experiment about that.
I'm afraid of the huge data, Oracle could be slowdown or the session in Java Resource application could be timeout.
Please tell me some advice about the solution.
Thank you very much.

With '?' mark i mean " How i can link this COL1 with column in csv file ? "
Attilio

IMPDP to import JAVA CLASS and JAVA SOURCE from .DMP file

hi,
I have a schema X, In that schema some of the *"JAVA CLASS" and "JAVA SOURCE"* objects are missing ..
The procedures ,functions..etc objects were updated at X schema..
I have 1 dmp file of Y schema , containing the missing "JAVA CLASS" and "JAVA SOURCE" s.. Can I import the the same to the schema X using IMPDP
i tried using INCLUDE clause but it is not working
eg:
impdp john1/john1@me11g22 directory=datadump dumpfile=DEVF2WAR.DMP remap_schema=devf2war:john INCLUDE="JAVA CLASS","JAVA CLASS"but error..
ORA-39001: invalid argument value
ORA-39041: Filter "INCLUDE" either identifies all object types or no object types.regards,
jp

Hello,
You should type JAVA_CLASS and JAVA_SOURCE (use underscore instead of space).
impdp john1/john1@me11g22 directory=datadump dumpfile=DEVF2WAR.DMP remap_schema=devf2war:john INCLUDE="JAVA_CLASS","JAVA_CLASS"Best Regards,
Gokhan Atil
If this question is answered, please mark appropriate posts as correct/helpful and the thread as closed. Thanks

Only to import JAVA CLASS and JAVA SOURCE from .DMP file using IMPDP

hi,
I have a schema X, In that schema some of the *"JAVA CLASS" and "JAVA SOURCE"* objects are missing ..
The procedures ,functions..etc objects were updated at X schema..
I have 1 dmp file of Y schema , containing the missing "JAVA CLASS" and "JAVA SOURCE" s.. Can I import the the same to the schema X using IMPDP
i tried using INCLUDE clause but it is not working
eg:
impdp john1/john1@me11g22 directory=datadump dumpfile=DEVF2WAR.DMP remap_schema=devf2war:john INCLUDE="JAVA CLASS","JAVA CLASS"but error..
ORA-39001: invalid argument value
ORA-39041: Filter "INCLUDE" either identifies all object types or no object types.regards,
jp

Double post: IMPDP to import JAVA CLASS and JAVA SOURCE from .DMP file
Already replied.
Regards
Gokhan

32-bit flash and java plugins freeze firefox and gnome on 64-bit linux

I have installed FC13 64-bit and am running 32-bit firefox 3.6.8 so that I can run flash plugin.
When I start 32-bit firefox 3.6.8 and go to site with flash or java applet, firefox locks up my gnome desktop necessitating a reboot of my computer.
Firefox 3.6.8 32-bit
Flash 10.1r82
Java jdk 1.6.0_15 32-bit
I have used a similar configuration on 32-bit FC13 with 32-bit Firefox 3.6.8 and everything works fine. No lockups.

Hi!
I finally solved this problem. The 32-bit libflashplugin required a 32-bit libcurl library that is not installed by default on 64-bit linux systems (at least not on Fedora). Once I installed 32-bit libcurl libs, flash and java plugins starting magically working.
In my opinion, 64-bit Fedora has done a poor job with 32-bit compatibility viz a viz 32-bit libs. I will submit an improvement ticket to Fedora folks about installing more 32-bit libs on 64-bit distros.
Bobby

Java, Linux and gcc 3.x

I recently put RedHat 8.0 on my linux box and then Java 1.4.1. There are obvious problems as RH8 uses gcc 3.2 and Java uses gcc 2.96. There is a bug about this, too, I know, but it has been closed by Sun with the comment "we don't support Mozilla". Sigh.
How have others taken this? It seems, to me, to be an extremely ignorant stance on Sun's part. What can I (we) do about this? I am very close to moving back to C++, given that Sun does not seem like they care much about the Linux community.
B

I agree - this has nothing to do with Mozilla. There are several threads on the forums discussing the fact that the Sun JVM does not play nicely with gcc3.x since the JVM is compiled with 2.95. All sun would have to do is spend the time to release a version of the JVM compiled with a more recent gcc.
Regarding your options, we have had success using the blackdown JVM, which comes in both a 3.2 and 2.95 version.
Gil

Why we have separate azure java SDK for linux and windows

I saw different links for downloading azure java SDK for linux and windows.
What difference does it actually have when java is platform independent? Or both are same jars?

Hi,
Thank you for your post.
It contains the same jar files.
Regards,
Mekh.

OID/Linux and Netsacpe Java SDK don't play nice

Here's a brief description of the problem. We are developing with the Netscape LDAP SDK for Java connecting to OID on Linux and deploying on Solaris. The problem I'm discussing here doesn't happen on Solaris. All access to the LDAP server is being funelled through one connection (please don't ask, I didn't design it).
Lets call an add, modify, delete or read an "action," for the sake of convenience. When an ldapjdk.jar client connects to an OID server, it can perform 32764 "actions." On the 32765th, it blocks forever waiting for OID server to return. Ok, the obvious solution is to implement a timeout and try again. Did that and it doesn't work. Ok, lets try dropping the connection at a watermark (say 30000 actions) and establishing a new one. Nope, still doesn't work. At the 32765 actions per client machine mark, it blocks forever.
Dumping the threads on the client side gives us something like the following:
main:
[1] java.lang.Object.wait (native method)
[2] java.lang.Object.wait (Object.java:424)
[3] netscape.ldap.LDAPMessageQueue.waitForMessage (LDAPMessageQueue.java:179)
[4] netscape.ldap.LDAPMessageQueue.nextMessage (LDAPMessageQueue.java:101)
[5] netscape.ldap.LDAPSearchListener.nextMessage (LDAPSearchListener.java:86)
[6] netscape.ldap.LDAPConnection.search (LDAPConnection.java:2584)
[7] netscape.ldap.LDAPConnection.read (LDAPConnection.java:2104)
[8] netscape.ldap.LDAPConnection.read (LDAPConnection.java:2098)
[9] ReadLockTest.run_test (ReadLockTest.java:96)
[10] ReadLockTest.run (ReadLockTest.java:49)
[11] ReadLockTest.main (ReadLockTest.java:25)
LDAPConnThread chakotay:389:
[1] java.net.SocketInputStream.socketRead (native method)
[2] java.net.SocketInputStream.read (SocketInputStream.java:90)
[3] java.io.BufferedInputStream.fill (BufferedInputStream.java:190)
[4] java.io.BufferedInputStream.read (BufferedInputStream.java:208)
[5] netscape.ldap.ber.stream.BERElement.getElement (BERElement.java:101)
[6] netscape.ldap.LDAPConnThread.run (LDAPConnThread.java:420)
Not much help there. I turned on all debugging on the OID server and got massive amounts of data back (and the server slowed to a crawl. :-] ). They all show the choke happening after gsldfb_FetchBaseObjs, and before leaving gslfcfdRefreshRootDSE. The last request (the 32765th) has started, but
never completes. I can provide parts of the logs on request.
Has anyone else encountered this problem?
Thanks.
Glenn McAllister
SOMA Networks, Inc.

Hello Glen:
I have not seen this before. Sounds like you have done a thorough job troubleshooting this and this may be a bug. If you are able, I would like you to file a trouble report at our Oracle Support web site:
http://www.oracle.com/support/metalink/index.html
Thanks,
Jay
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Important - Linux and Java

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