This appendix lists the default port numbers and describes how to change the assigned port after installation:
During installation, Oracle Universal Installer assigns port numbers to components from a set of default port numbers. Many Oracle Database components and services use ports. As an administrator, it is important to know the port numbers used by these services, and to ensure that the same port number is not used by two services on your host.
Most port numbers are assigned during installation. Every component and service has an allotted port range, which is the set of port numbers Oracle Database attempts to use when assigning a port. Oracle Database starts with the lowest number in the range and performs the following checks:
Is the port used by another Oracle Database installation on the host?
The installation may be up or down at the time; Oracle Database can still detect if the port is used.
Is the port used by a process that is currently running?
This could be any process on the host, even a non-Oracle Database process.
If the answer to any of the preceding questions is yes, Oracle Database moves to the next highest port in the allotted port range, and continues checking until it finds a free port.
In most cases, the port number of the Oracle Database component is listed in the tool used to configure the port. In addition, ports for some Oracle Database applications are listed in the portlist.ini file. This file is located in the ORACLE_HOME\install directory.
If you change a port number, it is not updated in the portlist.ini file, so you can only rely on this file immediately after installation. To find or change a port number, use the methods described in this appendix.
Table F-1 lists the port numbers and protocols used by components that are configured during the installation. By default, the first port in the range is assigned to the component, if it is available.
Table F-1 Ports Used in Oracle Components
| Component and Description | Default Port Number | Port Range | Protocol |
|---|---|---|---|
|
Allows Oracle client connections to the database by using Oracle Net services. You can configure this port number during installation. To reconfigure this port, use Net Configuration Assistant. |
1521 |
Port number changes to the next available port. Modifiable manually to any available port. |
TCP |
|
Listening port for Oracle client connections. It is not configured during installation, but can be configured using Net Configuration Assistant. |
1630 |
1630 |
TCP |
|
The Oracle XML DB HTTP port is used if web-based applications need to access an Oracle database from an HTTP listener. It is configured during installation, but you cannot view it afterward. See Also: "Using HTTP(S) on a Standard Port Instead of an Oracle XML DB Default Port" in Oracle XML DB Developer's Guide |
0 |
Configured Manually |
HTTP |
|
Oracle XML DB The Oracle XML DB FTP is used when applications need to access an Oracle database from an FTP listener. It is configured during installation, but you cannot view it afterward. See Also: "Using FTP on the Standard Port Instead of the Oracle XML DB Default Port" in Oracle XML DB Developer's Guide |
0 |
Configured Manually |
FTP |
|
Cluster Synchronization Service (CSS) CSS service internode connection for Group Manager. The port number is assigned automatically. You cannot view or modify it afterward. |
42424 |
Dynamic |
TCP |
|
The port number is assigned automatically during installation. You cannot view or modify it afterward. |
Dynamic |
Dynamic |
TCP |
|
Oracle Services for Microsoft Transaction Server The port number for Microsoft Transaction Server is configured when you enter its value in Oracle Universal Installer the first time you install the software on a particular server. If you install the software in multiple Oracle homes on the same server, then Oracle Universal Installer uses the same port number that you specified during the first installation. In most cases, you do not have to reconfigure the port number. "Changing the Oracle Services for Microsoft Transaction Server Port" explains how to change its port number. |
Dynamic |
49152-65535 |
TCP |
See Also:
Oracle Enterprise Manager Cloud Control Advanced Installation and Configuration Guide for information on Oracle Management Agent ports
Oracle Real Application Clusters Installation Guide for Microsoft Windows x64 (64-Bit) for a list of clusterware ports used in Oracle components
In most cases, you are not required to reconfigure the port number. If you must, then you can use the Registry Editor to edit its value in the HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\OracleMTSRecoveryService\Protid_0 Registry Editor key to any available port within the range 1024 to 65535.
During installation, Oracle Universal Installer takes the value for the port from the key, if it exists. Otherwise, a free port ranging from 49152 to 65535 is chosen.