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TRCROUTE is different from TNSPING in that it travels as a special type of connect packet, and is routed as such. These additional error messages make troubleshooting easier. If TRCROUTE encounters a problem, it returns an error stack to the client instead of a single error. The Trace Route Utility ( TRCROUTE) enables administrators to discover the path or route a connection is taking from a client to a server. This command produces the following message:
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To determine whether a connection can be made to the sales database, and to specify that TNSPING try to connect eight times and then give up, use the following syntax: TCP)(HOST = sales-server)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = Used TNSNAMES adapter to resolve the aliasĪttempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TNS Ping Utility for Solaris: Version 10.1.0.2.0 on 1 14:46:28Ĭopyright (c) 1997 Oracle Corporation. To connect to a database using a net service name of sales, the following is entered: Figure 15-1 depicts this example.Įxample: Reaching a Database with TNSPING In this scenario, the client requires a connect identifier of ( cn.ou.o.c). The directory contains database object sales with a DN of cn=sales,cn=OracleContext,ou=mktg,o=acme,c=jp. Where represents the Oracle Net entry.įor example, consider a client that has been configured with a default Oracle Context of cn=OracleContext,ou=acctg,o=acme,c=us. The absolute name the client uses as the connect identifier must be in one of the following formats: Where represents an optional organizationalUnitName.
#Network connect how to#
This section describes how to configure absolute names for the following namespaces:Ībsolute Names for Domain Component NamespacesĪbsolute Names for X.500 Namespaces For X.500 namespaces, the default directory entry defined for the client must be in one of the following formats: See the Oracle Database JDBC Developer's Guide and Reference for further information.
#Network connect drivers#
JDBC Thin Drivers support absolute naming only when the complete DN is used. Note: JDBC OCI Drivers support absolute naming.
#Network connect password#
To define a default connect identifier, use the TWO_TASK environment variable on UNIX platforms or the LOCAL environment variable or registry entry on Windows.įor example, if the TWO_TASK environment variable is set to sales, you can connect to a database from SQL*Plus with CONNECT username / password rather than CONNECT Oracle Net checks if TWO_TASK is set and uses the value sales as the connect identifier. This way, a connect identifier does not need to be specified in the connect string. On most operating systems, you can define a default connect identifier. The connect string takes the following basic form: How you make a connection depends upon the naming method you configured in Chapter 8, "Configuring Naming Methods", and the tool used for the connection. Select the Oracle HOME_NAME TNSListener service-the service name if you are using the default listener name LISTENER-or Oracle HOME_NAME TNSListener lsnr, where lsnr is the nondefault listener name.Īfter the network components are started, as described in "Connecting to a Database", you should be able to make a connection across the network. Select the Services icon in the Control Panel window. On Windows, the listener can also be started through the Control Panel: Check that all expected services for that listener are listed in the services summary in the status message.Įxit from the Listener Control utility. The Listener Control utility will display a status message indicating that the listener has started successfully. SET PASSWORD is only required if the password is set in the listener.ora file. If the listener is not running, go to Step 3.Įven if the listener is running, stop the listener, and start it again before proceeding to Step 2. If the STATUS command indicates that the listener is running, go to Step 2. It is not necessary to identify the listener if you are using the default listener, named LISTENER. Where listener_name is the name of the listener defined in the listener.ora file. For Oracle Net to accept connections on the database server, start the listener with the Listener Control utility on the server:ĭetermine the status of the listener.