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Well, I managed to get it working. &nbsp;Adding /usr/local/lib to the PATH didn't help. &nbsp;Turns out that the JVM wasn't being started with the properties that I thought it was. &nbsp;I had defined java.library.path in /opt/tomcat/conf/catalina.<wbr />properties<wbr />, and this was being loaded at some point. &nbsp;However, I've now added -Djava.library.path... to the command that starts the JVM and it now works! &nbsp;I guess you can get the points as it was your post that led me to find the problem. &nbsp;That, and you answered so DAMN fast!
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Well, I managed to get it working.  Adding /usr/local/lib to the PATH didn't help.  Turns out that the JVM wasn't being started with the properties that I thought it was.  I had defined java.library.path in /opt/tomcat/conf/catalina.properties, and this was being loaded at some point.  However, I've now added -Djava.library.path... to the command that starts the JVM and it now works!  I guess you can get the points as it was your post that led me to find the problem.  That, and you answered so DAMN fast!

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I have a JSP page calling a method in a seperate class that attempts to load a JNI library. &nbsp;On System.loadLibrary() I get the following exception:<br />
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java.lang.UnsatisfiedLinkE<wbr />rror: no 3StoreJNI in java.library.path<br />
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My java.library.path is set to '/usr/local/lib:/usr/lib/j<wbr />ava:/usr/l<wbr />ib' and in /usr/local/lib is 'lib3StoreJNI.so'. &nbsp;Calling System.mapLibraryName() gives 'lib3StoreJNI.so'. &nbsp;The same bit of code works fine outside of Tomcat, so I'm a bit confused as to what is going wrong. &nbsp;I'm running Tomcat 5.0.18 on a Gentoo linux box, kernel 2.6.1.<br />
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Is there anything else I can do to track the problem down?<br />
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Thanks,<br />
Simon Cox
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I have a JSP page calling a method in a seperate class that attempts to load a JNI library.  On System.loadLibrary() I get the following exception:

java.lang.UnsatisfiedLinkError: no 3StoreJNI in java.library.path

My java.library.path is set to '/usr/local/lib:/usr/lib/java:/usr/lib' and in /usr/local/lib is 'lib3StoreJNI.so'.  Calling System.mapLibraryName() gives 'lib3StoreJNI.so'.  The same bit of code works fine outside of Tomcat, so I'm a bit confused as to what is going wrong.  I'm running Tomcat 5.0.18 on a Gentoo linux box, kernel 2.6.1.

Is there anything else I can do to track the problem down?

Thanks,
Simon Cox

UnsatisfiedLinkException with JNI and Tomcat

Java Enterprise Edition (Java EE) is a specification defining a collection of Java-based server and client technologies and how they interoperate. Java EE specifies server and client architectures and uses profiles to define technology sets targeted at specific classes of applications. All Java EE profiles share a set of common features, such as naming and resource injection, packaging rules and security requirements.

Java EE

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.