Java.Lang.Unsatisfiedlinkerror: No Dll Inwards Java.Library.Path - Drive As Well As Solution

"Exception inwards thread "main" java.lang.UnsatisfiedLinkError: no dll inwards java.library.path" is i of the frustrating error you lot volition acquire if your application is using native libraries e.g. .DLL inwards Windows or .SO files inwards Linux. Java loads native libraries at runtime from either PATH environs variable or place specified yesteryear java.library.path organisation property depending upon whether your Java plan is using System.load() or java.lang.System.loadLibarray() method to charge native libraries. If Java doesn't honor them due to whatever argue it throws "java.lang.UnsatisfiedLinkError: no dll inwards java.library.path". Some of the close mutual UnsatisfiedLinkError is "java.lang.UnsatisfiedLinkError: no ocijdbc10.dll inwards java.library.path" and "java.lang.UnsatisfiedLinkError: no ocijdbc11.dll inwards java.library.path", which comes when you lot endeavor to connect to Oracle 10g or 11g database from Java plan using OCI JDBC driver.


If you lot write games inwards Java plan using lwjgl as well as then you lot mightiness convey seen this mistake every bit good "java.lang.unsatisfiedlinkerror no lwjgl inwards java.library.path", which comes when Java doesn't honor a native element of the lwjgl.jar library. It too mutual on Java application which uses JNI to link around amount legacy libraries inwards C as well as C++.   

I kickoff encounterd this mistake piece writing  some Tibco Rendezvous Messaging code which uses around windows specific dll, which is installed every bit business office of TIBCO RV installation. I was getting "java.lang.UnsatisfiedLinkError: Native library non found" which was caused yesteryear "java.lang.UnsatisfiedLinkError: no tibrvnative inwards java.library.path". 

I wasted a lot of hours playing amongst PATH, java.library.path as well as others alone to larn from experience. Here you lot volition larn the origin effort of "Exception inwards thread "main" java.lang.UnsatisfiedLinkError: no dll inwards java.library.path" as well as larn how to gear upward this Exception inwards Java.

Cause of java.lang.UnsatisfiedLinkError: no dll inwards java.library.path:

Oracle JDBC driver is using System.load() or System.loadLibrary() method. You tin flame too put this yesteryear looking at the mistake message, if you lot see java.library.path inwards mistake message way it sure as shooting using System.loadLibrary(). This message too tells that plan has provided that organisation holding as well as the plan is non looking for PATH for native libraries. Anyway if you lot are repeatedly getting this Error as well as then you lot tin flame endeavor next steps which may help you lot to resolve java.lang.UnsatisfiedLinkError in your Java application.

Solution of  "java.lang.UnsatisfiedLinkError: no dll inwards java.library.path"

As mistake clearly says that Java is non able to honor around native library required, it could hateful either library is non exists or Java is non able to locate them due to wrong PATH or java.library.path. Remember, when you lot don't furnish this organisation property, yesteryear default Java looks at PATH for native libraries inwards Windows operating organisation as well as on LD_LIBRARY_PATH inwards Linux. Though it's practiced exercise to furnish this PATH as well as role System.loadLibrary() method to convey a consistent place for native libraries on all platforms. 

Here are a distich of things you lot tin flame produce to solve mistake "java.lang.UnsatisfiedLinkError: no dll inwards java.library.path" :

1) Check your PATH for Java , whether it contains required dll or not.

2) Verify your java.library.path inwards representative you lot convey laid it for required dll.

3) Run your coffee application amongst ascendancy : java -Djava.library.path= "your dll path"

4) Try specifying a base of operations lift for the library as well as loading library using System.loadLibaray("name) where the lift is without dll.

5) Linux loads dynamically linked library(.so) from LD_LIBRARY_PATH thus you lot may desire to convey your shared library directory included inwards LD_LIBRARY_PATH e.g.

export LD_LIBRARY_PATH=/shared library (.so)

6) charge library yesteryear providing absolute path similar "C:/WINNT/system32/digest.dll" yesteryear using System.load("Path of native library") method. 

The psyche betoken is JVM should honor your dll as well as providing an explicitly path amongst -Djava.library.path ever help me.

Still getting java.lang.UnsatisfiedLinkError

If you lot are however getting Exception inwards thread "main" java.lang.UnsatisfiedLinkError: no dll inwards java.library.path, fifty-fifty afterward adding JAR into classpath as well as adding the native library into PATH environs variable as well as providing organisation holding java.library.path pointing to the place of native library place as well as then at that spot is must survive around directory inwards your PATH which is non resolved correctly.

I was frustrated afterward trying every method to solve this error, when I noticed the next error, only earlier this mistake comes :

"The organisation cannot honor the path specified" when I printed PATH variable.

since I was doing laid PATH= %PATH%; (location of the native library)

The organisation was non able to navigate to that directory because of those non-existent paths. In social club to solve that I only did opposite, added place of native library inwards forepart of PATH as well as it worked similar a charm

laid PATH = {location of native dll}; %PATH%

So pay attending to your PATH variable. It oftentimes happens PATH keeps directories of a uninstalled plan which abruptly breaks as well as System stops searches further. This upshot tin flame too come upward inwards Linux as well as you lot tin flame solve it only similar this, add together your native library every bit the kickoff entry inwards PATH environs variable.

Now a fleck of theory, if you lot role System.loadLibrary() as well as then it searches native library inwards the place specified yesteryear java.library.path but if you lot don't furnish that organisation library as well as then it defaults to PATH environs variable.

Things to Remember 

Some other points worth noting piece working amongst System subject libraries:

1) They brand Java code platform dependent.

2) System.loadLibrary() is equivalent to Runtime.getRuntime.loadLibary().

3) charge System.loadLibary(library) inwards static initializer block thus that it alone gets loaded when containing shape gets loaded and avoid reloading of it, though it could too Pb to ExceptionInitializerEror as well as NoClassDefFoundError if native libraries are non found. 

4) Another worth noting betoken is paying attending to exact mistake message java.lang.UnsatisfiedLinkError throws. if it shows  "Exception inwards thread "main" java.lang.UnsatisfiedLinkError: no dll inwards java.library.path"  way JVM is non able to locate as well as charge library. if it shows thread "main" java.lang.UnsatisfiedLinkError: com......' i.e. prints shape or method lift as well as then mayhap something is wrong amongst the library itself similar one-half copied dll.

Sometimes you lot may too get

Exception inwards thread "main" java.lang.UnsatisfiedLinkError: Expecting an absolute path of the library: digest.dll

        at java.lang.Runtime.load0(Runtime.java:767)

        at java.lang.System.load(System.java:1003)

to solve this only furnish absolute path for library as well as you lot volition survive fine.

That’s all on how to gear upward  Exception inwards thread "main" java.lang.UnsatisfiedLinkError: no dll inwards java.library.path" , percentage your sense if you lot convey faced this java.lang.UnsatisfiedLinkError before.

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