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Error message 'no sapjcorfc in java.library.path'

While compiling a piece of Java code making SAP connections, I get this error:

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Exception in thread "main" java.lang.ExceptionInInitializerError: JCO.classInitialize(): Could not load middlew
are layer 'com.sap.mw.jco.rfc.MiddlewareRFC'
no sapjcorfc in java.library.path
        at com.sap.mw.jco.JCO.(JCO.java:566)
        at test.main(test.java, Compiled Code)

Could you please let me know where the error lies?


This is likely caused by the fact that the Java compiler or interpreter cannot find the JCo application libraries in your system path. Depending on the operating system your are running, these are the non-Java link libraries that come with the JCo installation.

Look for 'sapjcorfc' in the JCo zipfile and copy this file into your system path (e.g. c:windowssystem32). This should fix your problem. If not, please email me your system details and I can better respond.


This was first published in November 2002

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