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Background documentationicm/HTTP/server_cache_<xx>/max_ufo_entries Locate this document in the navigation structure


This parameter sets the maximum number of entries in the UFO List (‘un-found objects’) of the ICM server cache.


Work area

Internet Communication Manager, SAP Web Dispatcher


Integer value (number of entries)

Standard value


Dynamically changeable


Value Range and Syntax

You can set values between 10 and 2 000 000 000.

You can also set the parameter to 0. This deactivates the UFO list.



When configuring the UFO list, pay particular attention to the memory requirements for the access index stored in main memory.

Rule of Thumb for Calculating Memory Requirements

Bedarf (in Bytes) = 2 * max_ufo_entries * max_name_len

In Unicode systems, the requirement is approximately twice as high.

More Information

Note the following documentation associated with this parameter:

ICM Server Cache

Generic Profile Parameters with Ending _<xx>