Resolution:
BW engine process gets terminated or disappear after a certain time without any cause or any error or exception shown in engine log file:

probable workaround

we have seen that the following workaround works for some customers.

add the following propery in your deployed bwengine tra file as this will protect the bwengine getting interfered from operating system's signals

java.extended.properties=-Xrs

Keywords:- engine, abrupt, exit, terminate