"An Internal Error Ocurred during SVN commit: length 16416 out of range, must be between 0 and 1384"

Answer 1

What version of:

• eclipse
• jdk
• svn plugin

are you using?

could you copy the callstack you can see in the eclipse logs (in the "error view" of eclipse)

This thread, for instance, suggests that the OP was using th wrong JDK. Using the latest JDK (see this eclipse.ini) here could be a good idea. (Same in this other thread).
In both thread, a similar callstack shown:

java.lang.IllegalArgumentException: length 16416 out of range; must be between 0 and 16384
   at gnu.javax.net.ssl.provider.Record.setLength(libgcj.so.81)
   at gnu.javax.net.ssl.provider.OutputSecurityParameters.encrypt(libgcj.so.81)
   at gnu.javax.net.ssl.provider.SSLEngineImpl.wrap(libgcj.so.81)
   at javax.net.ssl.SSLEngine.wrap(libgcj.so.81)
   at gnu.javax.net.ssl.provider.SSLSocketImpl$SocketOutputStream.write(libgcj.so.81)
   at java.io.BufferedOutputStream.write(libgcj.so.81)
   at org.tmatesoft.svn.core.internal.util.SVNLogOutputStream.write(SVNLogOutputStream.java:65)