JIT

Starting with Oracle 11gR1 Oracle JVM includes Just-in-Time compiler. Its goal is to convert JVM bytecode into platform-specific native code based on the performance data gathered in run-time. It is stated in the documentation that JIT “enables much faster execution” – and this is, in general, true. There are ways to control the behavior of [...]

JNI in Oracle

JNI – Java Native Interface – is an interface for cooperating Java and legacy code. Oracle RDBMS doesn’t support it officially in embedded Oracle JVM (aka “Aurora”): Oracle Database does not support the use of JNI in Java applications. If you use JNI, then your application is not 100 percent pure Java and the native methods [...]