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What do I do when Tomcat throws an exception?

Something's wrong with the native access code in this error message sent in by a site reader. Austin Sincock offers expert advice.

What do I do when Tomcat throws the following exception?

An unexpected exception has been detected in native code outside the VM. Unexpected Signal: EXCEPTION_ACCESS_VIOLATION...

occurred at PC=0x78010AA8 Function=memcpy+0x128 Library=C:WINNTsystem32MSVCRT.dll Current Java thread:at com.sap.mw.jco.rfc.MiddlewareRFC$Client.nativeExecute(Native Method)

You must ensure that sapjcorfc.dll and librfc32.dll are available within your System path. Typically, this means copying those two files from the JCo install into the WindowsSystem32 directory. If this doesn't work, you may need to edit the Tomcat startup files to add a path to these JCo dll files. Add the path to either tomcat/bin/startup.bat or tomcat/bin/catalina.bat.
This was last published in November 2004

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