多选题What two statements are true about Oracle Enterprise Manager’s Java Diagnostic tool， which makes the tool suitable for production server diagnostics ？（）Avirtually zero overhead for application running in the JVMBno stalling of running JVM when taking a
题目
多选题
What two statements are true about Oracle Enterprise Manager’s Java Diagnostic tool， which makes the tool suitable for production server diagnostics ？（）
A
virtually zero overhead for application running in the JVM
B
no stalling of running JVM when taking a heap dump for memory analysis
C
no need of modification， changes， or instrumentation of the application since is uses Network Protocol Analysis （NPA technology）
D
provides Byte Code Instrumentation for Java