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»Forums Index »Archive (2017 and earlier) »IQFeed Developer Support »UnsatisfiedLinkError
Author Topic: UnsatisfiedLinkError (2 messages, Page 1 of 1)

-Interested User-
Posts: 28
Joined: Oct 24, 2008

Posted: May 8, 2009 09:46 PM          Msg. 1 of 2
I've got an app working pretty well stand-alone but when I go to deploy it to my server, I get errors whenever I try to initialize the IQFeed DLL:

Caused by: java.lang.UnsatisfiedLinkError: C:\Program Files\DTN\IQFeed\iq_jni.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at com.iqfeed.IQ_32.<clinit>(
... 21 more

I added the c:\Program Files\DTN\IQFeed to the java.library.path (and c:\Windows and C:\Windows\System32 for good measure) but it looks like the iq_jni.dll is trying to access some DLL which it can't find.

Can anyone tell me which other DLLs it's trying to load and where I might find them?


-DTN Guru-
Posts: 2093
Joined: Nov 21, 2005

Posted: May 11, 2009 03:35 PM          Msg. 2 of 2
IQ_32.class loads iq_jni.dll from the IQFeed install directory.
iq_jni.dll loads IQ32.dll from the same directory.

The only dependancies that either IQ32.dll or iq_jni.dll have other than standard windows dlls is the Visual C++ 2005 sp1 runtime. This can be verified with dependency walker but be careful since dependecy walker will tell you that the VC++ runtime isnt' found due to the side-by-side configuration that MS uses.

The IQFeed install package installs the required VC++ runtimes as well as adds the IQFeed Installation directory to the system's Path variable.

Assuming you ran the default IQFeed install on the server and didn't manually copy any of the IQFeed files into other directories, it should "just work".

You might want to try running Dependency Walker on your server and opening the iq_jni.dll as well as the IQ32.dll to see if it detects anything missing other than the VC++ runtimes (they will be MSVC80.dll or similar naming).


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