text: Q:
  
  Apache Derby (JavaDB) fails silently at start from Windows command line
  
  I'm trying to start database with:
  
  C:\Program Files\Java\jdk1.8.0_60\db\bin>NetworkServerControl start
  
  No error messages, prompt returns immediately.
  And derby.log contains only old messages. As nothing happened.
  WTF? How can I debug this?
  UPD: I have added tracing from https://blogs.oracle.com/wittyman/entry/debug_tracing_in_apache_derby, but derby.log is still empty.
  I'm using java.exe from the same JDK (1.8.0 x64)
  
  A:
  
  The solution was to switch to x86 Java version. I've tried several x64 JDKs from 6 to 8, all had failed silently. I think it's Derby bug.
  
  