ITM Engine cores dump on AIX 5.3 when using JRE 1.3.1
Given the versions of AIX and JRE involved, it is likely to be caused by
AIX APAR IY70159.
There is a note related to that in the ITM Release Notes:
Prior to starting the Tivoli Monitoring engine on endpoints running AIX
5.3 ML1, ensure that AIX APAR IY70159 is installed. If it is not
installed, the engine stops when trying to print the trace, due to an
error during libDMXNtvtrace library loading.
Applying an AIX maintenance containing the fix should be enough to solve
the issue. The fix itself can be downloaded separately here: