When Oracle connector is built with mvn clean install -Poracle,infinispan-buffer -pl debezium-connector-oracle/ then the build ends with

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project debezium-connector-oracle: Fatal error compiling: CompilerException: NullPointerException -> [Help 1]

If the build is executed with mvn clean install -Poracle,infinispan-buffer,assembly -pl debezium-connector-oracle/ then it passes.

It seem the issue is caused by https://bugs.openjdk.java.net/browse/JDK-8216202.