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Listener errors - ORA-12516

girishkaleDec 26 2017 — edited Dec 26 2017

Hello Experts,

I've a java app server. Intermittently it throws the below error:

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

I did listener services and I see some refusal entries there. Please see below:

----

LSNRCTL> service

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.129.120.152)(PORT=1521)))

Services Summary...

Service "ORA112DB" has 1 instance(s).

  Instance "ORA112DB", status READY, has 1 handler(s) for this service...

    Handler(s):

      "DEDICATED" established:220702 refused:105798 state:ready

         LOCAL SERVER

Service "ORA112DBXDB" has 1 instance(s).

  Instance "ORA112DB", status READY, has 1 handler(s) for this service...

    Handler(s):

      "D000" established:0 refused:0 current:0 max:1022 state:ready

         DISPATCHER <machine: orcl-cust-4, pid: 20257>

         (ADDRESS=(PROTOCOL=tcp)(HOST=orcl-cust-4.bmc.com)(PORT=55666))

The command completed successfully

LSNRCTL>

----

Please help.

Many thanks!

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