You're having problems involving massive load in the portal system that leads to a CPU bottleneck, and the only workaround is to restart the system.
In the default trace (SAP Note 1596214), following message could be seen AT THE SAME TIME of the CPU load:
Connector thread for channel: <ChannelName> invalidated. Possible reason, the time needed for fetching delta items exceeds the value set for Delta Pull Channel Refresh Period.
- SAP Universal Worklist (UWL)
- SAP Enterprise Portal
- SAP NetWeaver Application Server Java
deltapull, performance, outofmemory, unavailability , KBA , gscbrazil_video , video , gscbrazil , EP-BC-UWL , Universal Worklist , How To
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