Robot has several stopped java probes

Document ID : KB000127498
Last Modified Date : 19/02/2019
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Issue:
Java probes are not starting.  Messages similar to the following are observed for the stopped probes.

Prediction Engine - Can not start prediction_engine, start after probe in error state () PPM - Probe 'ppm' FAILED to start (command = ../../..//bin/java.exe -Xms32m -Xmx1024m -cp "lib/ppm.jar" com.nimsoft.ppm.Main) error = (2) The system cannot find the file specified.
Baseline Engine - Probe 'baseline_engine' FAILED to start (command = ../../..//bin/java.exe -Xms64m -Xmx1024m -Dpds.encoding.charset=UTF-8 -XX:+UseConcMarkSweepGC -XX:+ScavengeBeforeFullGC -XX:+UseParNewGC -Dfile.encoding=UTF-8 -Dlog4j.configurationFile=log4j2.xml -DNIMBUS_HEARTBEAT_INTERVAL_SECONDS=5 -Djava.library.path="../../../lib" -jar lib/BaselineEngine-2.7.6.jar) error = (2) The system cannot find the file specified.
Discovery Agent - Probe 'discovery_agent' FAILED to start (command = ../../..//bin/java.exe -Xms64m -Xmx1024m -server -XX:ErrorFile=./hs_err_pid.log -jar lib/discovery_agent-8.51.jar) error = (2) The system cannot find the file specified.

This started after an unexpected reboot of the server.  Re-installing the probes and restarting the robot in an attempt to restart the probes are unsuccessful.
Cause:
Java_jre was corrupted during the unexpected reboot.
Resolution:
Redeploy the java_jre probe and then restart the robot.