openbravo 无法登陆 求助

seaame

可以进入到登陆页面，但无法登陆，点击登陆
出现500错误

错误代码
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException:
@CODE=@There are no connections available in jdbc:apache:commons:dbcp：openbravo_myPool
        org.openbravo.base.secureApp.SeguridadData.valido(Unknown Source)
        org.openbravo.base.secureApp.LoginHandler.doPost(Unknown Source)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
        org.openbravo.base.HttpBaseServlet.service(Unknown Source)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        org.openbravo.utils.SessionExpirationFilter.doFilter(Unknown Source)
        org.openbravo.utils.CharsetFilter.doFilter(Unknown Source)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.19 logs.

我所用的程序和系统
win2003 server edition
java sdk 1.7
tomcat 7.0.19
ant 1.8
OracleXEUniv