Unpredictable loadjava execution duration

Question

We are using the following batch file to run loadjava on Windows clients loading classes to Dec and AIX servers:
if (%OS%) == (Windows_NT) setlocal
SET CLASSPATH=.\serverExtras;.\libraries.jar;.\Alliance.jar;%CLASSPATH%
CALL loadjava -u %1 -v -resolve serverExtras.jar
CALL loadjava -u %1 -v -resolve libraries.jar
CALL loadjava -u %1 -v -f -resolve Alliance.jar
if (%OS%) == (Windows_NT) endlocal
The "serverExtras" and "libraries" files contain all the dependencies of our application code, which is in the "Alliance" jar file.
Loading data to the same instance of Oracle, this script will usually run for 1-2hrs. However, once in a while, it runs for 12-24hrs or more and we wind up killing it.
I'm not sure what to look at to figure out what is going on here. Are there any parameters or circumstances that are likely causing this?
Thanks for any suggestions.

Answer 1

GET RUN TIME FIELD
Basic form 5
GET RUN TIME FIELD f.
Effect
Relative runtime in microseconds. The first call sets (initializes) the field f to zero. For each subsequent call, f contains the runtime in microseconds since the first call. The field f should be of type I.
The ABAP statements that lie between two calls of the GET RUN TIME statement are known as the runtime. The time from the first to the second call is known as the measurement interval.
Notes
Use SET RUN TIME CLOCK RESOLUTION to specify the precision with which the time is to be measured, before you call GET RUN TIME FIELD for the first time. The default setting is high precision.
Example
Measuring Runtime for the MOVE Statement
DATA: T1   TYPE I,
      T2   TYPE I,
      TMIN TYPE I.
DATA: F1(4000), F2 LIKE F1.
TMIN = 1000000.
DO 10 TIMES.
  GET RUN TIME FIELD T1.
    MOVE F1 TO F2.
  GET RUN TIME FIELD T2.
  T2 = T2 - T1.
  IF T2 < TMIN.
    TMIN = T2.
  ENDIF.
ENDDO.
WRITE: 'MOVE of 4000 byte:', TMIN, 'microseconds'.
Note
SAP recommends that you measure the runtime several times and take the minimum result.
Related
To perform runtime measurements of complex processes, use Runtime analysis (Transaction SE30).
Related
SET RUN TIME CLOCK RESOLUTION
Additional help
Measuring Runtimes of Program Segments