If you receive a notification message about an unexpected error message, check the Failover Manager log file for an OutOfMemory message. Failover Manager runs with the default memory value set by this property:

# Extra information that will be passed to the JVM when starting the agent.

If you are running with less than 128 megabytes allocated, you should increase the value and restart the Failover Manager agent.

Failover Manager is tested with OpenJDK; we strongly recommend using OpenJDK. You can use the following command to check the type of your Java installation:

# java -version
openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)