Cannot see local process list in JConsole of JDK6

Question

When I run JConsole (JDK6)without parameters I cannot see list of local proceseses. JConsole with PID as a parameter works well. JConsole of JDK5 works ok. Does anybody help me?

Answer 1

Hi Michael,
Do you mind cd'ing to the directory that TMP is defined as and see if there is a directory named hsperfdata_<user> where <user> is your login. That is the directory where the instrumentation buffers are mapped (as shared memory files). Each time a java process starts it should create a file in that directory. The file name is the pid and that is how jps and the other jvmstat tools get the process list. If you don't see any pid-like files in the directory then it might be a permission problem. Can you try to create a file in the directory? If you get an "access denied" error then that would explain the issue. If you don't get an error then it would be interesting to see the cacls.exe output on the directory - that's the Windows command line tool to print the ACL on the directory.
A workaround might be to create a new temporary directory and just update the TMP variable in your environment (Control Panel -> System -> Advanced -> Environment Variables).
Regards,
Luis-Miguel Alventosa
Java SE JMX/JConsole development team
Sun Microsystems, Inc.