Thanks Nial. The port in port.ini is the default one 3872. I know it sounds weird, but the network tool showed that emagent.exe was using 10000. I did a test and would also be our current temporary solution. Stopped em agent, then Backup exec service was able to start with port 10000. Then started em agent again, it started with a different port. Could you let me know what diagnosis utility could be used for this? The EM agent client is 10.2.0.4 and the target database is 9.2.0.6. Thanks, Lu From: Niall Litchfield [mailto:niall.litchfield@xxxxxxxxx] Sent: Thursday, June 24, 2010 2:20 PM To: bgblanch@xxxxxxxxx Cc: oracle-l@xxxxxxxxxxxxx; Jiang, Lu Subject: Re: Port for emagent.exe There's also a .ini file that records the ports in use. EM uses static ports, and none of them are 10000 by default. I'd definitely query the diagnosis, are you sure it is em. Client sqlnet connections could id course be assigned that port by a listener, though I'd be surprised, and anyway 10000 is suspiciously like something a human would choose Niall Litchfield On Jun 24, 2010 5:52 PM, "William Blanchard" <bgblanch@xxxxxxxxx> wrote: You can look at the logs in $ORACLE_HOME/<database>/sysman/log. William Blanchard On Jun 24, 2010, at 11:24 AM, "Jiang, Lu" <Lu.Jiang@xxxxxxxxxxxx> wrote: Hello...