com/sun/corba is not in exclusiveAccess.dirs, and there's test start orbd service. If test run concurrently with other tests that start&use "orbd" service, "address in use" are likely to happen.

To demonstrate this issue, run below tests with -conc:2
-agentvm -conc:2 \
ws/jdk/test/com/sun/corba/cachedSocket/7056731.sh \
ws/jdk/test/javax/rmi/PortableRemoteObject/ConcurrentHashMapTest.java

ConcurrentHashMapTest (is likely to) fail with:
SEVERE: "IOP00410216: (COMM_FAILURE) Unable to create listener thread on the specified port: 1049"
...
Caused by: java.net.BindException: Address already in use

com/sun/corba (or at least com/sun/corba/cachedSocket) should be added into exclusiveAccess.dirs