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Installed and ran Alfresco 4.2 with Java 6 on Linux, I get this error:

NoClassDefFoundError: java/nio/channels/SeekableByteChannel

How to fix this error?

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The problem is due to using Java 6 (or earlier), whereas Java 7 is required.

  1. Install Java JDK 7 (or later)
  2. Add this line at the top of /bin/ :


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