[Building Sakai] resource upload failed error

[YUECHUAN DAI]

Hi, all

When I upload the third file to my resource folder, the system show me the
message bellow:

Unable to add item: Introducing RSF - 31-05-06.ppt

I checked catalina.out, here is the logs, is anyone can give some suggestion
for this? :

2012-04-09 22:25:22,579  WARN http-8080-Processor99
org.sakaiproject.content.impl.DbContentService - failed to write file from
stream to database
org.sakaiproject.exception.ServerOverloadException id=failed to write file
from stream to database
at 
org.sakaiproject.content.impl.DbContentService$DbStorage.commitResource(DbCo
ntentService.java:1777)
at 
org.sakaiproject.content.impl.BaseContentService.commitResourceEdit(BaseCont
entService.java:5727)
at 
org.sakaiproject.content.impl.BaseContentService.commitResource(BaseContentS
ervice.java:5540)
at 
org.sakaiproject.content.cover.ContentHostingService.commitResource(ContentH
ostingService.java:530)
at 
org.sakaiproject.content.tool.ResourcesAction.createResources(ResourcesActio
n.java:1185)
at 
org.sakaiproject.content.tool.ResourcesAction.finishAction(ResourcesAction.j
ava:7374)
at 
org.sakaiproject.content.tool.ResourcesAction.buildMainPanelContext(Resource
sAction.java:4578)
at sun.reflect.GeneratedMethodAccessor7992.invoke(Unknown Source)
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at 
org.sakaiproject.cheftool.VelocityPortletPaneledAction.toolModeDispatch(Velo
cityPortletPaneledAction.java:417)
at org.sakaiproject.cheftool.ToolServlet.doGet(ToolServlet.java:236)
at 
org.sakaiproject.cheftool.VelocityPortletPaneledAction.doGet(VelocityPortlet
PaneledAction.java:1086)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
at org.sakaiproject.vm.ComponentServlet.service(ComponentServlet.java:56)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:269)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:188)
at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:598)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:215)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:188)
at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.
java:659)
at 
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDis
patcher.java:457)
at 
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatch
er.java:359)
at 
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher
.java:311)
at 
org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveTo
olComponent.java:511)
at 
org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCh
aronPortal.java:1429)
at 
org.sakaiproject.portal.charon.handlers.ToolHandler.doTool(ToolHandler.java:
204)
at 
org.sakaiproject.portal.charon.handlers.ToolHandler.doGet(ToolHandler.java:9
6)
at 
org.sakaiproject.portal.charon.SkinnableCharonPortal.doGet(SkinnableCharonPo
rtal.java:862)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.j


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