This chapter provides a complete listing of the listener.ora file configuration parameters.
This chapter contains the following topics:
Oracle Net Listener configuration, stored in the listener.ora file, consists of the following elements:
Name of the listener
Protocol addresses that the listener is accepting connection requests on
Database services
Control parameters
Dynamic service registration, eliminates the need for static configuration of supported services. However, static service configuration is required if you plan to use Oracle Enterprise Manager.
By default, the listener.ora file is located in the ORACLE_HOME/network/admin directory. The listener.ora file can also be stored the following locations:
The directory specified by the TNS_ADMIN environment variable or registry value
On Linux and UNIX operating systems, the global configuration directory. For example, on the Solaris Operating System, this directory is /var/opt/oracle.
See Also:
Oracle operating system-specific documentationIt is possible to configure multiple listeners, each with unique name, in one listener.ora file. Multiple listener configurations are possible because each of the top-level configuration parameters has a suffix of the listener name or is the listener name itself.
Note:
It is often useful to configure multiple listeners in onelistener.ora file. However, Oracle recommends running only one listener for each node in most customer environments.Example 7-1 shows a listener.ora file for a listener named LISTENER, which is the default name of the listener.
LISTENER=
(DESCRIPTION=
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=sale-server)(PORT=1521))
(ADDRESS=(PROTOCOL=ipc)(KEY=extproc))))
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=sales.us.example.com)
(ORACLE_HOME=/oracle11g)
(SID_NAME=sales))
(SID_DESC=
(SID_NAME=plsextproc)
(ORACLE_HOME=/oracle11g)
(PROGRAM=extproc)))
The protocol address section of the listener.ora file defines the protocol addresses on which the listener is accepting connection requests. This section describes the most common parameters used in protocol addresses. The ADDRESS_LIST parameter is also supported.
See Also:
Chapter 4, "Protocol Address Configuration" for additional information about theADDRESS_LIST parameterThis section lists and describes the following parameters:
To specify a single listener protocol address.
Put this parameter under the DESCRIPTION parameter.
listener_name=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=hr-server)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521)))
See Also:
Chapter 4, "Protocol Address Configuration" for descriptions of the correct parameters to use for each type of support protocolTo contain listener protocol addresses.
listener_name=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=hr-server)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521)))
To determine which IP address the listener listens on when a host name is specified. This parameter is only applicable when the HOST parameter specifies a host name.
FIRST
Listen on the first IP address returned by the DNS resolution of the host name. If the user wants the listener to listen on the first IP to which the specified host name resolves, then the address must be qualified with (IP=FIRST).
V4_ONLY
List only on IPv4 addresses.
V6_ONLY
Listen only on IPv6 addresses.
This feature is disabled by default.
listener_name=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=rancode1-vip)(PORT=1522)(IP=V6_ONLY))
To specify the number of concurrent connection requests that the listener can accept on a TCP/IP or IPC listening endpoint (protocol address).
Put this parameter at the end of the protocol address with its value set to the expected number of concurrent connection requests.
The default number of concurrent connection requests is operating system specific.
The number of concurrent connection requests is dependent on the platform and listener usage scenarios. If the listener is heavily-loaded, then set the parameter to a higher number.
listener_name=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=hr-server)(PORT=1521)(QUEUESIZE=20)))
See Also:
Oracle Net Services Administrator's Guide for additional information about configuring this parameterTo specify, in bytes, the buffer space for receive operations of sessions. This parameter is supported by the TCP/IP, TCP/IP with SSL, and SDP protocols.
Note:
Additional protocols might support this parameter on certain operating systems. Refer to the operating system-specific documentation for additional information about additional protocols that support this parameter.Put this parameter under the DESCRIPTION parameter or at the end of the protocol address with its value set to the expected number of bytes.
The default value for this parameter is operating system-specific.
listener_name= (DESCRIPTION= (ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521) (RECV_BUF_SIZE=11784)) (ADDRESS=(PROTOCOL=ipc)(KEY=extproc) (RECV_BUF_SIZE=11784))) listener_name= (DESCRIPTION= (RECV_BUF_SIZE=11784)) (ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521) (ADDRESS=(PROTOCOL=ipc)(KEY=extproc)))
See Also:
Oracle Net Services Administrator's Guide for additional information about configuring this parameterTo specify, in bytes, the buffer space for send operations of sessions. This parameter is supported by the TCP/IP, TCP/IP with SSL, and SDP protocols.
Note:
Additional protocols might support this parameter on certain operating systems. Refer to operating system-specific documentation for additional information about additional protocols that support this parameter.Put this parameter under the DESCRIPTION parameter or at the end of the protocol address.
The default value for this parameter is operating system-specific.
listener_name= (DESCRIPTION= (ADDRESS_LIST= (ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521) (SEND_BUF_SIZE=11280)) (ADDRESS=(PROTOCOL=ipc)(KEY=extproc) (SEND_BUF_SIZE=11280)))) listener_name= (DESCRIPTION= (ADDRESS_LIST= (SEND_BUF_SIZE=11280)) (ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521) (ADDRESS=(PROTOCOL=ipc)(KEY=extproc))))
See Also:
Oracle Database Net Services Administrator's Guide for additional information about configuring this parameterThe connection rate limiter feature in the Oracle Net Listener enables a DBA to limit the number of new connections handled by the listener. When this feature is enabled, Oracle Net Listener imposes a user-specified maximum limit on the number of new connections handled by the listener every second.
Depending on the configuration, the rate can be applied to a collection of endpoints, or to a specific endpoint.
This feature is controlled through the following two listener.ora configuration parameters:
To specify a global rate that is enforced across all listening endpoints that are rate-limited. When this parameter is specified, it overrides any endpoint-level numeric rate values that might be specified.
CONNECTION_RATE_listener_name=number_of_connections_per_second
To indicate that a particular listening endpoint is rate limited. The parameter is specified in the ADDRESS section of the listener endpoint configuration.
LISTENER= (ADDRESS_LIST= (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)(RATE_LIMIT=yes)) )
When the RATE_LIMIT parameter is set to yes, the end-point is included in the enforcement of a listener-wide connection rate. This is used with the CONNECTION_RATE_listener_name parameter.
When the RATE_LIMIT parameter is set to a value greater than 0, the rate limit is enforced at that endpoint level.
The following examples use the CONNECTION_RATE_listener name and RATE_LIMIT parameters.
Example 1
CONNECTION_RATE_LISTENER=10 LISTENER= (ADDRESS_LIST= (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)(RATE_LIMIT=yes)) (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1522)(RATE_LIMIT=yes)) (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1523)) )
In the preceding example, the total number of new connections through ports 1521 and 1522 is limited at 10 every second. Connections through port 1523 are not limited and do not count towards the overall rate of 10 connections every second.
Example 2
LISTENER= (ADDRESS_LIST= (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)(RATE_LIMIT=5)) (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1522)(RATE_LIMIT=10)) (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1523)) )
In the preceding example, the connection rates are enforced at the endpoint level. A maximum of 5 connections are processed through port 1521 every second. The limit for connections through port 1522 is 10 every second. Connections through port 1523 are not limited.
Note:
The globalCONNECTON_RATE_listener_name parameter is not specified in the preceding configuration. If it is specified, then the limits on ports 1521 and 1522 are ignored, and the global value is used instead.This section describes the following parameters that control the behavior of the listener:
To restrict run-time administration of the listener.
Setting ADMIN_RESTRICTIONS_listener_name=on disables the run-time modification of parameters in listener.ora. That is, the listener refuses to accept SET commands that alter its parameters. To change any of the parameters in listener.ora, including ADMIN_RESTRICTIONS_listener_name itself, modify the listener.ora file manually and reload its parameters (using the RELOAD command) for the new changes to take effect without explicitly stopping and restarting the listener.
See Also:
Oracle Database Net Services Administrator's Guide for additional information about password security of the listeneroff
ADMIN_RESTRICTIONS_listener=on
To set notification. By default, the Oracle Net listener notifies Cluster Ready Services (CRS) when it is started or stopped. These notifications allow CRS to manage the listener in an Oracle Real Application Clusters environment. This behavior can be prevented by setting the CRS_NOTIFICATION_listener_name parameter to off.
on
on | off
To enable users to connect to the database without having to specify a service name from the client side.
In Oracle Database 11g, when a client tries to connect to the database the connection request passes through the listener. The listener may be servicing several different databases. If a service name is configured in this parameter, then users may not necessarily need to specify a service name in the connect syntax. If a user specifies a service name, then the listener connects the user to that specific database, otherwise the listener connects to the service name specified by the DEFAULT_SERVICE_listener_name parameter.
See Also:
Oracle Database Net Services Administrator's Guide for additional information about the Easy Connect naming methodThere is no default value for the DEFAULT_SERVICE_listener_name parameter. If this parameter is not configured and a user does not specify a fully-qualified service name in the connect syntax, then the connection attempt fails. This parameter only accepts one value.
DEFAULT_SERVICE_LISTENER=sales.us.example.com
To specify the time, in seconds, for the client to complete its connect request to the listener after the network connection had been established.
If the listener does not receive the client request in the time specified, then it terminates the connection. In addition, the listener logs the IP address of the client and an ORA-12525:TNS: listener has not received client's request in time allowed error message to the listener.log file.
To protect both the listener and the database server, Oracle recommends setting this parameter in combination with the SQLNET.INBOUND_CONNECT_TIMEOUT parameter in the sqlnet.ora file. When specifying values for these parameters, consider the following recommendations:
Set both parameters to an initial low value.
Set the value of the INBOUND_CONNECT_TIMEOUT_listener_name parameter to a lower value than the SQLNET.INBOUND_CONNECT_TIMEOUT parameter.
For example, you can set the INBOUND_CONNECT_TIMEOUT_listener_name parameter to 2 seconds and the INBOUND_CONNECT_TIMEOUT parameter to 3 seconds. If clients are unable to complete connections within the specified time due to system or network delays that are normal for the particular environment, then increment the time as needed.
60 seconds
INBOUND_CONNECT_TIMEOUT_listener=2
See Also:
Oracle Database Net Services Administrator's Guide for additional information about configuring these parametersTo specify the list of nodes that cannot register with the listener. The list can include host names or CIDR notation for IPv4 and IPv6 addresses. The wildcard format (*) is supported for IPv4 addresses. The presence of a host name in the list results in the inclusion of all IP addresses mapped to the host name. The host name should be consistent with the public network interface.
Valid nodes and subnet IP addresses or names.
If the REGISTRATION_INVITED_NODES_listener_name parameter and the REGISTRATION_EXCLUDED_NODES_listener_name parameter are set, then the REGISTRATION_EXCLUDED_NODES_listener_name parameter is ignored.
REGISTRATION_EXCLUDED_NODES_listener= (10.1.26.*, 10.16.40.0/24, \
2001:DB8:3eff:fe38, node2)
To specify the list of node that can register with the listener. The list can include host names or CIDR notation for IPv4 and IPv6 addresses. The wildcard format (*) is supported for IPv4 addresses. The presence of a host name in the list results in the inclusion of all IP addresses mapped to the host name. The host name should be consistent with the public network interface.
Valid nodes and subnet IP addresses or names.
If the REGISTRATION_INVITED_NODES_listener_name parameter and the REGISTRATION_EXCLUDED_NODES_listener_name parameter are set, then the REGISTRATION_EXCLUDED_NODES_listener_name parameter is ignored.
REGISTRATION_INVITED_NODES_listener= (10.1.35.*, 10.1.34.0/24, \
2001:DB8:fe38:7303, node1)
To specify whether run-time configuration changes are saved into the listener.ora file.
When you set the parameter to true, any parameters that were modified while the listener was running using the Listener Control utility SET command are saved to the listener.ora file when the STOP command is issued. When you set the parameter to false, the Listener Control utility does not save the run-time configuration changes to the listener.ora file.
false
true | false
SAVE_CONFIG_ON_STOP_listener=true
To specify whether a client is authenticated using the Secure Sockets Layer (SSL).
true
true | false
The database server authenticates the client. Therefore, this value should be set to false. If this parameter is set to true, then the listener attempts to authenticate the client, which can result in a failure.
SSL_CLIENT_AUTHENTICATION=false
To subscribe to Oracle Notification Service (ONS) notifications for downed events. By default, the listener subscribes to the ONS node down event on startup, if ONS is available. This subscription enables the listener to remove the affected service when it receives node down event notification from ONS. The listener uses asynchronous subscription for the event notification. Alter this behavior setting SUBSCRIBE_FOR_NODE_DOWN_EVENT_listener_name=off in listener.ora.
on
on | off
To determine whether valid node checking registration is performed, or the subnet is allowed. When set to on, valid node checking registration is performed at the listener for any incoming registration request, and only local IP addresses are allowed.
off
off | 0 to specify valid node checking registration is off, and no checking is performed.
on | 1 | local to specify valid node checking registration is on, and all local IP addresses can register. If a list of invited nodes is set, then all IP addresses, host names, or subnets in the list as well as local IP addresses are allowed.
subnet | 2 to specify valid node checking registration is on, and all machines in the local subnets are allowed to register. If a list of invited nodes is set, then all nodes in the local subnets as well as all IP addresses, host names and subnets in the list are allowed.
VALID_NODE_CHECKING_REGISTRATION_listener=on
To specify the location of wallets. Wallets are certificates, keys, and trustpoints processed by SSL that allow for secure connections.
Oracle wallets on file system:
WALLET_LOCATION=
(SOURCE=
(METHOD=file)
(METHOD_DATA=
(DIRECTORY=directory)
[(PKCS11=TRUE/FALSE)]))
Microsoft certificate store:
WALLET_LOCATION=
(SOURCE=
(METHOD=mcs))
Oracle wallets in the Microsoft Windows registry:
WALLET_LOCATION=
(SOURCE=
(METHOD=reg)
(METHOD_DATA=
(KEY=registry_key)))
Entrust wallets:
WALLET_LOCATION=
(SOURCE=
(METHOD=entr)
(METHOD_DATA=
(PROFILE=file.epf)
(INIFILE=file.ini)))
The following additional parameters are available for WALLET_LOCATION:
SOURCE: Type of storage for wallets and storage location.
METHOD: Type of storage.
METHOD_DATA: Storage location.
DIRECTORY: Location of Oracle wallets on file system.
KEY: Wallet type and location in the Microsoft Windows registry.
PROFILE: Entrust profile file (.epf).
INIFILE: Entrust initialization file (.ini).
None
The key/value pair for Microsoft certificate store (MCS) omits the METHOD_DATA parameter because MCS does not use wallets. Instead, Oracle PKI (public key infrastructure) applications obtain certificates, trustpoints and private keys directly from the user's profile.
If an Oracle wallet is stored in the Microsoft Windows registry and the wallet's key (KEY) is SALESAPP, then the storage location of the encrypted wallet is HKEY_CURRENT_USER\SOFTWARE\ORACLE\WALLETS\SALESAPP\EWALLET.P12. The storage location of the decrypted wallet is HKEY_CURRENT_USER\SOFTWARE\ORACLE\WALLETS\SALESAPP\CWALLET.SSO.
Oracle wallets on file system:
WALLET_LOCATION=
(SOURCE=
(METHOD=file)
(METHOD_DATA=
(DIRECTORY=/etc/oracle/wallets/databases)))
Microsoft certificate store:
WALLET_LOCATION=
(SOURCE=
(METHOD=mcs))
Oracle Wallets in the Microsoft Windows registry:
WALLET_LOCATION=
(SOURCE=
(METHOD=REG)
(METHOD_DATA=
(KEY=SALESAPP)))
Entrust Wallets:
WALLET_LOCATION=
(SOURCE=
(METHOD=entr)
(METHOD_DATA=
(PROFILE=/etc/oracle/wallets/test.epf)
(INIFILE=/etc/oracle/wallets/test.ini)))
Beginning with Oracle Database 11g, Oracle Database includes an advanced fault diagnosability infrastructure for preventing, detecting, diagnosing, and resolving problems. The problems are critical errors such as those caused by database code bugs, metadata corruption, and customer data corruption.
When a critical error occurs, it is assigned an incident number, and diagnostic data for the error, such as traces and dumps, are immediately captured and tagged with the incident number. The data is then stored in the Automatic Diagnostic Repository (ADR), a file-based repository outside the database.
This section includes the parameters used when ADR is enabled (when DIAG_ADR_ENABLED_listener_name is set to on). "Non-ADR Diagnostic Parameters for Oracle Net Listener" includes those used when ADR is disabled (when DIAG_ADR_ENABLED_listener_name is set to off). Non-ADR parameters listed in the listener.ora file are ignored when ADR is enabled.
To specify the base directory in to which tracing and logging incidents are stored when ADR is enabled.
The default is ORACLE_BASE, or ORACLE_HOME/log if ORACLE_BASE is not defined.
Any valid directory path to a directory with write permission.
ADR_BASE=/oracle/network/trace
To indicate whether ADR tracing is enabled.
When the DIAG_ADR_ENABLED_listener_name parameter is set to on, then ADR file tracing is used. When the DIAG_ADR_ENABLED_listener_name parameter is set to off, then non-ADR file tracing is used.
on
on | off
DIAG_ADR_ENABLED=on
To turn logging on or off. This parameter is also applicable when non-ADR tracing is used.
on
on | off
LOGGING_listener=on
To turn listener tracing on, at a specific level, or off. This parameter is also applicable when non-ADR tracing is used.
off | 0
off or 0 for no trace output
user or 4 for user trace information
admin or 10 for administration trace information
support or 16 for Oracle Support Services trace information
TRACE_LEVEL_listener=admin
To add a time stamp in the form of dd-mon-yyyy hh:mi:ss:mil to every trace event in the trace file for the listener. This parameter is used with the TRACE_LEVEL_listener_name parameter. This parameter is also applicable when non-ADR tracing is used.
on
on | true
off | false
TRACE_TIMESTAMP_listener=true
This section lists the parameters used when ADR is disabled (when DIAG_ADR_ENABLEDlistener_name is set to off). "ADR Diagnostic Parameters for Oracle Net Listener" includes the parameters when ADR is enabled.
Notes:
The default value of DIAG_ADR_ENABLED_listener_name ison. Therefore, the DIAG_ADR_ENABLED_listener_name parameter must explicitly be set to off to use non-ADR tracing.To specify the destination directory of the listener log file. Use this parameter when ADR is not enabled.
ORACLE_HOME/network/log
LOG_DIRECTORY_listener=/oracle/network/admin/log
To specify the name of the log file for the listener. Use this parameter when ADR is not enabled.
listener.log
LOG_FILE_listener=list.log
To specify the destination directory of the listener trace file. Use this parameter when ADR is not enabled.
ORACLE_HOME/network/trace
TRACE_DIRECTORY_listener=/oracle/network/admin/trace
To specify the name of the trace file for the listener. Use this parameter when ADR is not enabled.
listener.trc
TRACE_FILE_listener=list.trc
To specify the size of the listener trace files in kilobytes (KB). When the size is met, the trace information is written to the next file. The number of files is specified using the TRACE_FILENO_listener_name parameter. Use this parameter when ADR is not enabled.
Unlimited
TRACE_FILELEN_listener=100
To specify the number of trace files for listener tracing. When this parameter is set along with the TRACE_FILELEN_listener_name parameter, trace files are used in a cyclical fashion. The first file is filled first, then the second file, and so on. When the last file has been filled, the first file is re-used, and so on.
The trace file names are distinguished from one another by their sequence number. For example, if the default trace file of listener.trc is used, and this parameter is set to 3, then the trace files would be named listener1.trc, listener2.trc and listener3.trc.
In addition, trace events in the trace files are preceded by the sequence number of the file. Use this parameter when ADR is not enabled.
1
TRACE_FILENO_listener=3
The class of secure transports (COST) parameters specify a list of transports that are considered secure for administration and registration of a particular listener. The COST parameters identify which transports are considered secure for that installation and whether the administration of a listener requires secure transports. Configuring these parameters is optional.
The following are the COST parameters:
See Also:
Oracle Database Net Services Administrator's Guide for additional information about COST parameters and listener securityTo enable or disable dynamic registration. When set to on, the listener accepts dynamic registration. When set to off, the listener refuses dynamic registration. Static registrations are not affected by this parameter.
DYNAMIC_REGISTRATION_listener_name={on|off}
The default value is on. Unless this parameter is explicitly set to off, all registration connections are accepted.
To specify the transports on which control commands are to be serviced.
SECURE_CONTROL_listener_name = [(]transport1[,transport2, ....,transportn)]
In the preceding syntax, transport1, transport2, and transportn are valid, installed transport protocol names.
If the SECURE_CONTROL_listener_name parameter is configured with the list of transport names, then the control commands will be serviced only if the connection is one of the listed transports. Connections arriving by other transport protocols are refused. For example:
SECURE_CONTROL_listener1 = (TCPS, IPC)
In the preceding example, administration requests are accepted only on TCPS and IPC transports.
If no values are entered for this parameter, then the listener accepts any connection on any endpoint.
LISTENER1= (DESCRIPTION= (ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521)) (ADDRESS=(PROTOCOL=ipc)(KEY=extproc)) (ADDRESS=(PROTOCOL=tcps)(HOST=sales-server)(PORT=1522)) ) SECURE_CONTROL_LISTENER1=tcps
To specify the transports on which registration requests are to be accepted.
SECURE_REGISTER_listener_name = [(]transport1[,transport2, ....,transportn)]
In the preceding example, transport1, transport2, and transportn are valid, installed transport protocol names.
If the SECURE_REGISTER_listener_name parameter is configured with the list of transport names, then only the connections arriving on the specified transports will be able to register the service with the listener. Connections arriving by other transport protocols are refused. For example:
SECURE_REGISTER_listener1 = (TCPS, IPC)
In the preceding example, registration requests are accepted only on TCPS and IPC transports.
If no values are entered for this parameter, then the listener accepts registration requests from any transport.
If this parameter and SECURE_CONTROL_listener_name are configured, then they override the SECURE_PROTOCOL_listener_name parameter.
LISTENER1= (DESCRIPTION= (ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521)) (ADDRESS=(PROTOCOL=ipc)(KEY=extproc)) (ADDRESS=(PROTOCOL=tcps)(HOST=sales-server)(PORT=1522)) ) SECURE_REGISTER_LISTENER1=tcps
To specify the transports on which administration and registration requests are to be accepted.
SECURE_PROTOCOL_listener_name = [(]transport1[,transport2, ....,transportn)]
In the preceding example, transport1, transport2, and transportn are valid, installed transport protocol names.
If this parameter is configured with the list of transport names, then the control commands and service registration can happen only if the connection belongs to the list of transports configured.
If this parameter is not present and neither SECURE_CONTROL_listener_name or SECURE_REGISTER_listener_name are configured, then all supported transports accept control and registration requests.
If the SECURE_CONTROL_listener_name and SECURE_REGISTER_listener_name parameters are configured, then they override the SECURE_PROTOCOL_listener_name parameter.
LISTENER1= (DESCRIPTION= (ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521)) (ADDRESS=(PROTOCOL=ipc)(KEY=extproc)) (ADDRESS=(PROTOCOL=tcps)(HOST=sales-server)(PORT=1522)) ) SECURE_PROTOCOL_LISTENER1=tcps
COST parameters can also be used in combination to further control which transports accept service registration and control commands.
In Example 7-2, control commands are accepted only on the IPC channel and the TCPS transport, and service registrations are accepted only on an IPC channel.
Example 7-2 Combining COST Parameters
LISTENER1=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521))
(ADDRESS=(PROTOCOL=ipc)(KEY=extproc))
(ADDRESS=(PROTOCOL=tcps)(HOST=sales-server)(PORT=1522)) )
SECURE_CONTROL_LISTENER1=(tcps,ipc)
SECURE_REGISTER_LISTENER1=ipc
In Example 7-3, control commands are accepted only on the TCPS transport and service registrations are accepted only on the IPC channel.