The processes probe command line arguments end at character 8138, and for java processes it can be longer.
Release : 8.5x, 9.x, 20.x
Component : UIM - PROCESSES 4.70
This is a limitation in the probe for which an enhancement is already in the roadmap.
Currently only for HPUX has an extra limit for having process name + command line up to 1000 bytes.
Currently mcs under 20.3x supports up to 2048 and will be increased to 4096 with the release of 20.4.