SAP Note 23642 - Description of pxanew and pxastat

Symptom:

There are two files are in the directory /usr/sap//D*/work with the names "pxanew" and "pxastat". The names of ABAP/4 programs which are loaded into the program buffer (the so-called PXA buffer) when the system is next started are listed in these files.
The programs listed in "pxastat" are loaded first, then those in "pxanew". "pxanew" is then copied to "pxastat" and "pxanew" is deleted. When shutting down the system normally, the names of all programs in the buffer are entered in the file "pxanew".
Thus, the programs listed in "pxanew" are those that were used in the last system instance. The files listed in "pxastat" are from the previous instance. This prevents the PXA statistics being lost if the system is started and then immediately stopped again.

Cause and prerequisites

Without this "preload" process, system response time would be initially very slow until the relevant programs were loaded back into the buffer.

Solution
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