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ORA-12516: TNS:listener could not find available handler with matching protocol stack.

edited Feb 22, 2012 4:12AM in Database Networking (MOSC) 3 commentsAnswered

New Oracle 11G install on a windows 2003 server.  The database runs fine at first.  But after running multiple reports etc, the listener stops receiving messages.  Actually it blocks the instance I'm trying to connect to.  When I run lsnrctl services I get the following:


Service "CLRExtProc" has 1 instances(s).
   Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service ...
       Handlers(s):
          "DEDICATED" established:346 refused 0
               LOCAL SERVER
Service "orcl.Falcon-Domain.Local" has 1 instances(s).
   Instance "orcl", status READY, has 1 handler(s) for this service ...
       Handlers(s):
          "DEDICATED" established:346 refused 0 state:blocked
               LOCAL SERVER
Service "orclXDB.Falcon-Domain.local" has 1 instances(s).

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