Panupong Chantaklang [https://community.jboss.org/people/nancomsp] created the discussion "JBPM 5.4 on linux redhat kernel 2.6.32-131.0.15.el6.x86_64 can not open drools-guvnor" To view the discussion, visit: https://community.jboss.org/message/827440#827440 -------------------------------------------------------------- *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. -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/827440#827440] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]