You can prevent Oracle listener backlog full conditions
by increasing the value of the Oracle QUEUESIZE parameter.
The value of the
Oracle
QUEUESIZE parameter,
which is located in the
listener.ora file, specifies
the maximum number of concurrent connections that the listener can
receive.
For more information, see Handling Large Volumes
of Concurrent Connection Requests in the Oracle online help
at:
To set
the QUEUESIZE parameter, edit
the address line in the listener.ora file, which
is located in the $ORACLE_HOME/network/admin directory,
as follows: (ADDRESS = (PROTOCOL = TCP)(HOST = servername)(PORT = portnumber)(QUEUESIZE = number))