Changes in This Release for Oracle Database Net Services Administrator's Guide
These are the changes in Oracle Database Net Services Administrator's Guide for Oracle Database 18c:
New Features
The following are the new features in Oracle Net Services:
-
Read-only Oracle Home Support
An Oracle home can be configured in a read-only mode, which prevents creation or modification of files inside the Oracle home (
ORACLE_HOME
) directory. A read-only Oracle home can be used as a software image that can be shared across multiple independent servers. This simplifies patching and mass rollout as only one Oracle home image needs to be updated to distribute a patch to multiple servers. In the read-only Oracle home mode,ORACLE_BASE_
HOME is a home-specific directory located atORACLE_BASE/homes/
HOME_NAME.See Also:
-
Support for Oracle Connection Manager in Traffic Director Mode
Starting with Oracle Database release 18c, Oracle Connection Manager in Traffic Director Mode is a proxy that is placed between the database clients and the database instances. This feature provides improved high availability and performance for both planned and unplanned outages with the help of new
cman.ora
parameters. Some of the existing parameters that support Oracle Connection Manager in Traffic Director Mode areinbound_connect_timeout, min_gateway_processes, max_gateway_processes,
andmax_connections
. Additional parameters must be specified in thecman.ora
configuration file to configure Oracle Connection Manager in Traffic Director Mode.The client applications must be Database Resident Connection Pool (DRCP) aware. This means enabling DRCP in connect string or in
tnsnames.ora
alias. These applications can be supported with Oracle Connection Manager in Traffic Director Mode for failover, multiplexing, data dependent routing, and offloading operations that involve routing calls over different sessions. -
New Initialization Parameter for Service Registration
Starting with Oracle Database release 18c, a new initialization parameter,
FORWARD_LISTENER
is introduced for service registration. It specifies the name of a listener to which a connection must be forwarded by an existing set of remote listeners.
Deprecated Features
The following features are deprecated in this release and may be desupported in a future release:
Deprecation of Sockets Direct Protocol (SDP)
The Oracle Net Services support for Sockets Direct Protocol (SDP) is deprecated. Oracle recommends that you use TCP as an alternative.
Deprecation of Weak Native Network Encryption and Integrity Algorithms
The DES
, DES40
, 3DES112
, 3DES168
, RC4_40
, RC4_56
, RC4_128
, RC4_256
, and MD5
algorithms are deprecated in this release.
As a result of this deprecation, Oracle recommends that you review your network encryption and integrity configuration to check if you have specified any of the deprecated weak algorithms.
To transition your Oracle Database environment to use stronger algorithms, download and install the patch described in My Oracle Support note 2118136.2.
Related Topics