What is the Java Library Path?

Hi,
I have a Java package that I need to add to my computer. The instillation information that I received with this package is as follows:
* For this package to function, you must modify your java library path
(the "java.library.path" property) or you must copy <WInterface.dll> to
a directory that is already on that path.
My questions are
1). What is the java.library.path?
2). How do I determine what the path is for my computer,
3). And finally how do I modify this path?
Thanks for your assistance.

1) It is the list of paths to search when loading libraries.
2) That can be found out with this program:public class PrintLibraryPath {
public static void main(String[] args) {
System.out.println(System.getProperty("java.library.path"));
}3) By giving the java launcher the command line argument "-Djava.library.path=yourpath".

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How can i find what the java.library.path is?? urgent

Hi,
I have an unsatisfiedlinkerror and the message is no jicmp in java.library.path. can anyone tell me how to do System.out.println and the path???
This is very urgent so anyhelp would be gratefully recieved
Thanks
Vanessa

I have an unsatisfiedlinkerror and the message is no
jicmp in java.library.path.
can anyone tell me how to
do System.out.println and the path???System.getProperty() will retrieve the Java-defined system properties. You can use the following code to determine the available values:
public static void main( String [] args ) {
java.util.Properties p = System.getProperties();
java.util.Enumeration keys = p.keys();
while( keys.hasMoreElements() ) {
System.out.println( keys.nextElement() );
Refer http://www.javaworld.com/javaworld/javaqa/2001-07/01-qa-0706-env.html
Jatin

How do i print out the java.library.path??

hi, can anyone show me how to print out java.library.path to the terminal? im having unsatisfiedlinkerror problems
thanks for help in advance
vanessa

System.out.println(System.getProperty("java.library.path"));

How the java.library.path is set?

Hi,
Can anyone please tell me know how System class (or JVM) sets the default value of the property java.library.path?
I tried searching the answer on net but I was not able to find any thing.
Regards,
Kev.

If you don't set it, I believe the JVM then reverts to using the search strategy of the native system.
On Windows, that means first looking in load directory, then looking in the Windows directory. (I made this intentionally vague; I believe these actually changed at one point during Windows' history.)
It is something else on Unices.

"no ocijdbc11 in java.library.path" error when connecting a TNS database co

Hi
"no ocijdbc11 in java.library.path" error when connecting a TNS database connection
I have the same problem 'error code' when testing the connection to a database although I have an APEX db that connects without a problem.
I have re downloaded jre & SQL Developer just to ensure all files are where they should be with no luck.
I've also tried most of the suggestions in various threads.
Does anyone know what exactly causes this error?
eg; should I be looking for a file called 'ocijdbc11' & put it into the 'java.library.path' path?
Can anyone explain to a newbie at db connections what I should do?
I'm using the 'thin' client as the checkbox is clear & I don't know what path to enter into the correct file to make this work??
This is & needs to connect as a TNS connection & was working fine until recently, the only change I can think of is a move of files from the 'C' drive but I thought redownloading SQL Developer would slove this.
Thanks

When you reinstalled SQL Developer, did you install into a new directory (ie rename or delete the old directory first)?
I don't know if system setup contains directory references (which might be invalid after moving the location of SQL Developer). Does renaming your system2.1.1.64.45 directory (in C:\Documents and Settings\username\Application Data\SQL Developer) help? Note that your connections are in the connections.xml file in the o.jdeveloper.db.connection.11.1.1.2.36.55.30 subdirectory of system2.1.1.64.45 - you will either need to export connections before renaming and then import again after or copy this file to test if you can connect.
Finally, the TNS Names directory preference is just a way of telling SQL Developer where to look for the tnsnames.ora file, rather than just assuming it will pick the right one. If you go to create a new connection, do you get the right list of TNS aliases? If not, then set this preference to the directory where the right tnsnames.ora file lives.
theFurryOne

Problems with java.library.path

Hi.
I'm having trouble with the java.library.path setting. Ok, this is the scenario:
My app is inside a JAR. What I need is to load a native library, and for user convenience I'm putting some common locations manually in java.library.path. Like this:
          // append custom path for the native libraries
          String libraryPath = System.getProperty("java.library.path");
          String sep = System.getProperty("path.separator");
          libraryPath = "." + sep + "libs" + sep + "native" + sep + libraryPath;
          System.setProperty("java.library.path", libraryPath);
          System.out.println(libraryPath);Pretty easy, right? (This is the first thing in my main method). Ok, so I've put the native libraries in the same dir than my JAR. I just do 'java -jar myjar.jar' and my app spits this:
.:libs:native:/usr/java/jdk1.5.0_06/jre/lib/i386/client:/usr/java/jdk1.5.0_06/jre/lib/i386:/usr/java/jdk1.5.0_06/jre/../lib/i386so my hack is working but... voila! I get UnsatisfiedLinkError.
What is really annoying and has me out of my mind is the fact that if I run my app as:
java -Djava.library.path=. -jar myapp.jarit works! If I do this my app prints:
.:libs:native:.and everything works as expected. What the ff$�(�&$ is going on here??
Please, help me I'm desperate.
Thanks

this one drove me batty for a while too.
once the library path is set, that's it, playing with it has no effect.
my solution involved a new instance the VM, something along the lines of:
String[] C = new String[] { "bash", "-c", "java -Djava.library.path="+libraryPath };
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec( C );
int eVal = proc.waitFor();
System.exit( eVal );
or cmd/command in C[0], /c in C[1] for a M$ system.
the err and out streams are available using proc.getErrorStream() and proc.getInputStream() as well.

Java.lang.UnsatisfiedLinkError: no ocijdbc10 in java.library.path

Hi,
I'm using Java 1.5 with Oracle 10g on a Mac 10.5.6 and trying to use the OCI cilent. Sadly, I'm getting the following error
Caused by: java.lang.UnsatisfiedLinkError: no ocijdbc10 in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1753)
at java.lang.Runtime.loadLibrary0(Runtime.java:822)
at java.lang.System.loadLibrary(System.java:993)
at oracle.jdbc.driver.T2CConnection$1.run(T2CConnection.java:3147)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.jdbc.driver.T2CConnection.loadNativeLibrary(T2CConnection.java:3143)
at oracle.jdbc.driver.T2CConnection.logon(T2CConnection.java:221)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:441)
at oracle.jdbc.driver.T2CConnection.<init>(T2CConnection.java:132) at oracle.jdbc.driver.T2CDriverExtension.getConnection(T2CDriverExtension.java:78)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
at com.caucho.sql.DriverConfig.createDriverConnection(DriverConfig.java:567)
at com.caucho.sql.ManagedConnectionImpl.initDriverConnection(ManagedConnectionImpl.java:242) at com.caucho.sql.ManagedConnectionImpl.<init>(ManagedConnectionImpl.java:131)
at com.caucho.sql.ManagedFactoryImpl.createManagedConnection(ManagedFactoryImpl.java:121) at com.caucho.jca.ConnectionPool.create(ConnectionPool.java:792)
at com.caucho.jca.ConnectionPool.allocatePool(ConnectionPool.java:661) at com.caucho.jca.ConnectionPool.allocate(ConnectionPool.java:620)
... 23 more
My database connection string is
jdbc:oracle:oci:@test-database:1521:orcl11
I am using a Resin 3.0.19 app server, and the java.library.path I set it to is /opt/oracle:/opt/oracle/lib. Here are the contents of those directories
/opt/oracle:
bin     lib     network     ord     sqlj
/opt/oracle/lib
README_IC.htm          libheteroxa10.dylib     libocijdbc10.dylib     orai18n.jar
classes12.jar          libnnz10.dylib          libsqlplus.dylib     sqlplus
glogin.sql          libocci.dylib.10.1     ocrs12.jar
libclntsh.dylib.10.1     libociei.dylib          ojdbc14.jar
Any ideas for further troubleshooting? Thanks, - Dave

The oci library must be in the shared library path of the platform. Simple as that.
Do you have that library(ocijdbc10) installed? On platforms besides MAC a client install of the Oracle GUI allows for it.

Error "no ocijdbc11 in java.library.path" in SQL Developer 4

Hi!
I have just installed the latest version of Oracle 12c and the latest SQL Developer (4.0.0.12). I have also JDK 7u25 installed. I run everything on Windows 7 64bit. When I create a local connection in SQL Developer and test or try to connect I get the error: no ocijdbc11 in java.library.path
If I try the exact same thing in SQL Developer 3.2.2 (the one bundled with the latest Oracle 12c) it works fine. In both versions of SQL Developer I have done no configuration and all the settings are the defaults.
I have read all the posts that relate to this error message, but they are all based on older versions or other platforms.
Is there a problem in the default configuration of SQL Developer 4 or a compatibility problem with Oracle 12c? Any ideas of how to fix this?
When I compare the properties of the two versions of SQL Developer I see that most of them are identical, but the java.library.path points to the sqldeveloper/bin directory in v4 and to the sqldeveloper root folder in v3. I don't know if that is significant.
Also the setting "Use OCI/Thick Driver" under "Database: Advanced" is unchecked, so it seems strange that it tries to use it anyway.
/nikos

Nikos:
You should search that ocijdbc11 is installed in a path similar to C:\Oracle32bit\product\11.2.0\client32bit\bin and that this path (or C:\Oracle32bit\product\11.2.0\client32bit) is in your java.library.path.
If you click on Help|About and the Extensions tab you will see a list of some of these.
Click on the Export button and copy the contents to a file or clipboard. Open the file (or Ctrl/V) in an editor and search for java.library.path. This is the list of ;-separated folders that SQL looks in. Ensure that this list includes the one where your ocijdbc11 was found.
HTH

UnsatisfiedLinkError: no something in Java.library.path

Hi everybody,
This error seem to be common with many ppl, but i couldnt solve it after go through couple of available solutions. My java program using native C++ code to control the hardware input like mouse click or keyboard under Linux. I've also used jdic for system tray. So basislly i have some external jar files and .so shared-files. When i ran the project, i got this error. I have tried to add the missing .jar file to project external jar file and the required library files in the java.library.path using add variables in project setting. It doesnt work
Can anybody have some advices, thank you?

Hi,
Please check out this thread http://forums.sun.com/thread.jspa?threadID=627890

How to set java.library.path form code

I'm new to JNI. I see there are several ways to set JVM to look for libraries dll, so, etc.
     System.setProperty("java.library.path", ".");
     System.loadLibrary("hello");That's when UnsatisfiedLinkError
java.lang.UnsatisfiedLinkError: no hello in java.library.path
     at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1682)
     at java.lang.Runtime.loadLibrary0(Runtime.java:822)
     at java.lang.System.loadLibrary(System.java:992)
     at HelloWorld.main(HelloWorld.java:17)But if I comment the line that sets the java.library.path and call the program with the command java -Djava.library.path=. HelloWorld works.
The question is: Why is not working? How should it be the property setup? I rather don't set Variables, or use -D option.
Thanks in advance.
PD: If it helps I'm using JDK 1.5.0_01 on Linux kernel 2.6.8

well i wrote the script and everything is fine! i can run the blackbox example on the commapi.
But i am writing another program using netbeans to send some data to a PIC microcontroller using the serial port (that is why i installed the commapi), and when i'm trying to build it or run it on netbeans throws this error:
Error loading LinuxSerialParallel: java.lang.UnsatisfiedLinkError: no LinuxSerialParallel in java.library.path
Exception in thread "main" java.lang.UnsatisfiedLinkError: isDevLink
at com.sun.comm.Unix.isDevLink(Native Method)
at com.sun.comm.PathBundle.add(PathBundle.java:108)
at com.sun.comm.PlatformPortBundle.<init>(PlatformPortBundle.java:44)
at javax.comm.CommPortIdentifier.<clinit>(CommPortIdentifier.java:138)
as far as i know it seems to be missing a library (LinuxSerialParallel), if this is right, adding the library would solve the error?how can i add the library? is there another way to solve this?
thanks in advance!!

Weird java library path error

I have the so file in the path and the file name is spelled correctly. Java still complains that the so file is not in the java.library.path. I used System.loadLibrary("Java_xDVDFSReader"). Is it possible that my so file is messed up? I included the gcc command I used to make it. I'm not familar w/ gcc so I'm not sure if the error comes from a "messed up" so file or not. Any suggestions? TIA
[ttran@localhost Java-Library-Path]$ java FindJavaLibraryPath
Library path: /usr/java/j2sdk1.4.2_02/jre/lib/i386/client:/usr/java/j2sdk1.4.2_02/jre/lib/i386:/usr/java/j2sdk1.4.2_02/jre/../lib/i386:/home/ttran/projects/Java_xDVDFSReader/final/
[ttran@localhost Java-Library-Path]$ cd ../Java_xDVDFSReader/final/
[ttran@localhost final]$ ls
C-Lib Java_xDVDFSReader.so xDVDFSReader.class xDVDFSReader.java xDVDFSReader.java~
[ttran@localhost final]$ pwd
/home/ttran/projects/Java_xDVDFSReader/final
[ttran@localhost final]$ java xDVDFSReader
Exception in thread "main" java.lang.UnsatisfiedLinkError: no Java_xDVDFSReader.so in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1491)
at java.lang.Runtime.loadLibrary0(Runtime.java:788)
at java.lang.System.loadLibrary(System.java:834)
at xDVDFSReader.<clinit>(xDVDFSReader.java:15)
[ttran@localhost final]$ cd C-Lib/
[ttran@localhost C-Lib]$ make
gcc -o ../Java_xDVDFSReader.so -shared -Wl,-soname,Java_xDVDFSReader.so -I/usr/java/j2sdk1.4.2_02/include -I/usr/java/j2sdk1.4.2_02/include/linux Java_xDVDFSReader.c -static -lc

This thread contains the answer:
http://forum.java.sun.com/thread.jsp?thread=298006&forum=54&message=1178476
It's stupid to have to put "lib" infront of a so file. Whose fault is it? UNIX or Java ;)

How to add path to "java.library.path" property?

I use this command to set the "java.library.path" property:
java -Djava.library.path=./libs HelloWorldBut it will overwrite the default value. How can I add the path "./libs" to the default value of "java.library.path"?

Have you tried
-Djava.library.path=%PATH%;./libs The command search path is the only default I know. By the way, are you certain that the present working directory will always be the parent of "libs"?

Help: java.library.path and javah

Hello,
I have a little problem with my java.library.path!
I am working on a program which loads a dll in c++ that I have compiled
and will be used by a java program.
My java program consists of 2 Classes:
-- MonitorContainer.class creates an object; this object has an attribute which is a String type and it should be communicating with my dll: Diskid32.dll
-- This dll is loaded by another class : Diskid32.class with a known
and documented method: System.loadLibrary("Diskid32").
When all the following files(MonitorContainer.class, Diskid32.class, Diskid32.dll) are in the same folder, the program works fine
I need to put the Diskid32.dll and the Diskid32.class into a package! (package myutil.Disk)
I have two questions concerning the javah tool:
-- when I when I create the signatures with javah should I run:
------ javah Diskid32 or something else like
------ javah util.Disk.Diskid32 or ...
I have tried both of these and they produce header files which are different and both produce the same result in execution error
when I run my program and it's package
-- I tried to configure the java.library.path but still no go! When I launch java MonitorContainer I receive the following wrong message :
Exception in thread "main" java.lang.UnsatisfiedLinkError: no Diskid32 in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1344)
at java.lang.Runtime.loadLibrary0(Runtime.java:744)
at java.lang.System.loadLibrary(System.java:815)
at myutil.Disk.Diskid32.<clinit>(Diskid32.java:52)
at MonitorContainer.main(MonitorContainer.java:21)
My conclusion is that library path is not well configured
and the JVM is not finding my library diskid32.dll.
Thank for all...
Stephane

Hello,
I 've solve my problem: to set the library path You must write :
java -Djava.library.path=c:/xxx/yyy/zzz ; c:/xxx/yyy/zzz is the path to locate the Dll!
But the really problem was a forgetting in the c++ code, I have write a mistake in the line that references � class!
(jclass cls = env->FindClass(".../.../...");)
Thank for all

I got this message "no ocijdbc8 in java.library.path", what should i do???

i use personal oracle 8.0.5, jdeveloper 3, win98. When i make connection with JDBC Driver (Oracle JDBC OCI-8), local DB with network Protocol (BEQ), when i click Test Connection button i got this message "no ocijdbc8 in java.library.path", what should i do with this ???
please tell me because i'm new with this.
thank's

In jdbc library, you have this file. Try to put it in JDeveloper bin folder, or in system\bin folder.

HANA Studio installation error: Error getting the version of the native layer: java.lang.UnsatisfiedLinkError: no sapjco3 in java.library.path

When attempting to add the ADT to HANA Studio I get the error:
Error getting the version of the native layer: java.lang.UnsatisfiedLinkError: no sapjco3 in java.library.path
Additionally I get something about a possibly missing Microsoft Runtime DLL VS2010.
When I then attempt to add ABAP Projects I get the error:
An error has occurred. See error log for more details.
com/sap/mw/jco3/eclipse/Registry
I have tried with sites:
SAP Development Tools for Eclipse - Juno Software Repository
SAP Development Tools for Eclipse - Kepler Software Repository
I have been able to install the ADT on Eclipse-Kepler which is running fine.

I did and on that page the following is stated:
For Windows OS: DLLs VS2010 for communication with the back-end system is required.
NOTE: Install either the x86 or the x64 variant, accordingly to your 32- or 64-Bit Eclipse installation.
This seems exactly to address the issue I am grapling with, but when downloading and trying to install the file I get the message that the current version on my frontend is more recent than the version I am trying to install.
Is that not strange?

What is the Java Library Path?

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