Oracle9i Net Services Administrator's Guide Release 2 (9.2) Part Number A96580-01 |
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This section describes the new networking features of Oracle9i release 9.2 and provides pointers to additional information. New features information from previous releases is also retained to help those users migrating to the current release.
The following sections describe the new networking features:
The new features for Oracle Net Services in release 2 (9.2) include:
Oracle Net Manager enables you to create, modify, or delete a net service alias to reference a net service name or database service object in Oracle Internet Directory. In addition to exporting database objects, the Oracle Names Control utility provides support for exporting alias objects stored in an Oracle Names server to a directory server or indirectly to an LDAP Data Interchange Format (LDIF) file.
See Also:
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The Oracle Names Control utility provides supporting for exporting global database link to a directory server. However, username and password credentials are not supported.
See Also:
"Exporting Network Objects from an Oracle Names Server" for instruction on exporting objects stored in an Oracle Names server to a directory server |
Using a new security mechanism for directory naming, you can assign a group as the owner of the OracleNetAdmins group. The default owner is the OracleNetAdmins group itself. By changing the ownership of this group, you can separate the OracleNetAdmins members who manage the directory naming entries from those users who add members to OracleNetAdmins group.
Oracle Net Services provides a new Trace Assistant tool that converts existing trace file text into a more readable format.
You can use SQL statement ALTER SYSTEM SET
to dynamically update the LOCAL_LISTENER
and REMOTE_LISTENER
parameters. When these parameters are dynamically updated, the PMON process registers this information with the listener.
The new features for Oracle Net Services in release 1 (9.0.1) include:
To provide consistency with Oracle9i, several name changes to networking products, features, and parameters have been made in this release. The following table maps the former product and feature names to their new names.
The following table maps the multi-threaded server (MTS) parameters and dynamic view names to the new names associated with shared server. Except for the MTS_MAX_SERVERS
parameter, the old parameter names are maintained for backward compatibility to Oracle8i. Oracle Corporation recommends migrating to the new names.
Configurations that use dedicated servers can now use the connection load balancing feature that was previously available only for shared server configurations.
The Oracle Net Configuration Assistant enables you to create multiple Oracle Contexts to facilitate management of a complex naming structure in a directory server.
In future releases, Oracle Names will not be supported as a centralized naming method. As Oracle Names is deprecated in favor of directory naming with LDAP-compliant directory servers, Oracle Names LDAP Proxy servers provide a way for release 8.1.5 or previous clients that do not support directory naming to use the same data as is used for directory naming. Oracle Names LDAP Proxy servers are Oracle Names servers that have been configured to proxy for LDAP-compliant directory servers. Upon startup, Oracle Names LDAP Proxy servers obtain network object information from a directory server. This provides a single point of definition for all data in a directory server and does not require that both Oracle Names servers and directory servers be maintained separately and simultaneously.
In an effort to streamline configuration decisions for the Internet, the following subsections describe the features and the configuration file that are no longer being supported:
protocol.ora
fileIdentix and SecurID Authentication Methods
If you are using Identix or SecurID authentication methods, provided by Oracle Advanced Security, Oracle Corporation recommends migrating to one of the following authentication methods:
Novell Directory Services (NDS) External Naming and NDS Authentication
Support for NDS as an authentication method and as an external naming method is no longer supported. If you are using NDS as an external naming method, Oracle Corporation recommends using directory naming instead.
Net8 OPEN
Net8 OPEN, which provided an application program interface (API) that enabled programmers to develop both database and non-database applications, is no longer supported.
Prespawned Dedicated Servers
Prestarted dedicated server processes are no longer supported. Instead, configure shared server to improve scalability and system resource usage.
protocol.ora File
The protocol.ora
file is no longer supported.
Parameters in the protocol.ora
file have been merged into the sqlnet.ora
file. These parameters enable you to configure access control to the database, as well as no delays in TCP/IP buffer flushing. These parameters include:
TCP.NODELAY
TCP.EXCLUDED_NODES
TCP.INVITED_NODES
TCP.VALIDNODE_CHECKING
See Also:
Oracle9i Net Services Reference Guide for a description of these parameters |
If you have a protocol.ora
file in the $ORACLE_HOME/network/admin
directory on UNIX, and the ORACLE_HOME
\network\admin
directory on Windows operating systems, Oracle Net Manager, when first started, automatically merges the protocol.ora
parameters into the sqlnet.ora
file.
There may be operating system-specific parameters in protocol.ora
that are node specific. For this reason, Oracle Corporation recommends not sharing sqlnet.ora
with other nodes after merging or adding these parameters.
Protocol Support
Protocol addresses using the SPX or LU6.2 protocol must be replaced. Oracle Net provides support for the following network protocols:
See Also:
Oracle9i Net Services Reference Guide for protocol parameter configuration |
These Oracle Net features introduced in Oracle8i also apply to Oracle9i:
Client Load Balancing--When more than one listener supports a service, a client can randomize requests to the various listeners.
Connect-Time Failover--When more than one listener supports a service, a client can be configured to fail over the client request to a different listener if the first listener fails.
Network information can now be stored in a centralized LDAP-compliant directory service, including Oracle Internet Directory and Microsoft Active Directory.
With the connect descriptor INSTANCE_ROLE
parameter, you can specify a connection to the primary or secondary instance of Oracle9i Real Application Clusters and Oracle9i Real Application Clusters Guard configurations.
Service Naming--Oracle8i database services are identified by a service name rather than an Oracle System Identifier (SID). This impacts the way connect descriptors are defined.
Direct Hand-Off--The listener has the ability to hand off requests directly to an shared dispatcher, without issuing a redirect message back to the client.
Service Registration--Database instances register information with the listener during database startup.
Connection Load Balancing--The listener is able to balance the number of active connections among various instances and shared server dispatchers for the same service.
Oracle Net Configuration Assistant is a post-installation tool that performs basic configuration. After installation, it automatically configures default configuration files.
See Also:
"Oracle Net Configuration Assistant" and Oracle operating system-specific installation guides |
Database services are identified by service name and instance name rather than Oracle System Identifier (SID).
A protocol for client/server authentication over a network using TCP/IP and the Secure Sockets Layer (SSL).
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