My Step

1. I install jbpm 5.4 from extract jbpm-5.4.0.Final-installer-full.zip to my developme machine
2. run command ant install.demo.noeclipse
3. run command ant start.demo.noeclipse
   

     Every things look well but when i try to connect http://mydevmachine:8080/drools-guvnor.

i can access first page but system show error 500. After i saw server.log many line show erro like

Caused by: java.sql.SQLException: Java exception: '/app/jbpm-installer/repository/workspaces/default/db/seg0/c3f1.dat (Too many open files): java.io.FileNotFoundException'.

          at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source) [derby-10.5.3.0_1.jar:]

          at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source) [derby-10.5.3.0_1.jar:]

          at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source) [derby-10.5.3.0_1.jar:]

          at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source) [derby-10.5.3.0_1.jar:]

          at org.apache.derby.impl.jdbc.Util.javaException(Unknown Source) [derby-10.5.3.0_1.jar:]

          at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown Source) [derby-10.5.3.0_1.jar:]

its mean derby cannot create data file.

How to fix this problems ?

My machhine is VM

- CPU 4 core 2.0 Mhz up
- RAM 8 GB
- Storage 40 GB
Installed Software & OS
- OS linux redhat kernel 2.6.32-131.0.15.el6.x86_64
- Sun JDK 1.6.0_45 64 bit

Thank for any advance.