SYMPTOM:
Users receive the following error message when running reports with large data sets in 3-tier using Strategy Developer. The same report executes successfully in Strategy Web:
Error: Server <ServerName> has temporarily become unavailable
In the DSSErrors.log, the following error message is detected around the time that the Strategy Developer users report the problem:
2004-10-07 12:33:54.357-06:00 MSINetStream::net_read(), socket recv() error, error code = 10055
CAUSE:
This issue occurs because the data returning from the Strategy Intelligence Server is too large for the client (Developer) machine to handle as it lacks sufficient buffer space.
It is possible that the same report may execute without any errors on a different client machine.
ACTION:
The fix entails packaging the packets coming to the Network Classes code (from the serialization code) before they are sent to the client into 20 MB lumps and breaking them into 20 MB chunks if they are larger in size. As this figure may affect the performance of the Narrowcast Server services, users can create a registry setting to change it under "HKLM\Software\MicroStrategy\Data Sources\CastorServer" in the registry. Users should create a DWORD entry "NetChunkingSize" and set its value to the desired MB in hexadecimal.
By default the "NetChunkingSize" is not present in the registry and 20MB is used as the chunk size, users should not alter this value unless they are positive that it is the cause of the performance problems.
Registry Modification:
WARNING:
Modifying registry values incorrectly may cause serious, system-wide problems that may require the re-installation of Microsoft Windows NT. Any edit of the registry is done at the user`s own risk. Since these are user-initiated changes, they are not covered by any Strategy warranty. If using Microsoft Windows NT, the user should backup the registry and/or update an Emergency Repair Disk (ERD) prior to alterations.
