Cluster Manager

The port number is assigned automatically during installation. You cannot view or modify it afterward.

Dynamic

Dynamic

TCP

Yes

Cluster Synchronization Service daemon (CSSD)

The Cluster Synchronization Service (CSS) daemon uses a fixed port for node restart advisory messages.

This port is used on all interfaces that have broadcast capability. Broadcast occurs only when a node eviction restart is imminent.

42424

Dynamic

TCP

Yes

Grid Plug and Play (GPNPD)

GPNPD provides access to the Grid Plug and Play profile, and coordinates updates to the profile among the nodes of the cluster to ensure that all of the nodes have the most recent profile.

Dynamic

Dynamic

TCP

No

Multicast Domain Name Service (MDNSD)

The mDNS process is a background process on Linux and UNIX, and a service on Windows, and is necessary for Grid Plug and Play and GNS.

5353

Dynamic

TCP

No

Oracle Cluster Registry

The port number is assigned automatically during installation. You cannot view or modify it afterward.

Dynamic

Dynamic

TCP

Yes

Oracle Clusterware Daemon (CRSD)

Oracle Clusterware daemon internode connection. The port number is assigned automatically during installation. You cannot view or modify it afterward.

Dynamic

Dynamic

TCP

Yes

Oracle Connection Manager

Listening port for Oracle client connections to Oracle Connection Manager. You can configure Oracle Connection Manager after installation using NETCA.

1630

1630

TCP

No

Quality of Management Service (QOMS) Server

The CRS Agent uses port 8888 locally to manage the lifecycle of the container.

8888

8888

HTTP

Not applicable

Quality of Management Service (QOMS) Server

Port for the Quality of Management Service server.

23792

23792

JMX/RMI

No

Oracle Data Guard

Shares the Oracle Net listener port and is configured during installation. To reconfigure this port, use Oracle Net Configuration Assistant (NETCA) to reconfigure the listener.

1521 (same value as the listener)

modifiable manually to any available port

TCP

No

Oracle Event Manager (EVM)

Generates events for Oracle Clusterware. The port number is assigned automatically during installation. You cannot view or modify it afterward.

Dynamic

Dynamic

TCP

Yes

Oracle Grid Interprocess Communication (GIPCD)

A support daemon that enables Redundant Interconnect Usage.

42424

Dynamic

TCP

Yes

Oracle Grid Naming Service (GNSD)

The Oracle Grid Naming Service daemon performs name resolution for the cluster.

53

53

UDP

No

Oracle Grid Naming Service (GNSD)

The Oracle Grid Naming Service daemon performs name resolution for the cluster.

Dynamic

Dynamic

TCP

No

Oracle HA Services daemon (OHASD)

The Oracle High Availability Services (OHAS) daemon starts the Oracle Clusterware stack.

42424

Dynamic

TCP

Yes

Oracle Net Listener

Allows Oracle clients to connect to the database by using Oracle Net Services. You can configure this port during installation. To reconfigure this port, use NETCA.

1521

Port number changes to the next available port.

Modifiable manually to any available port.

TCP

No

Oracle Notification Services (ONS)

Port for ONS, used for the publish and subscribe service for communicating information about Fast Application Notification (FAN) events. The FAN notification process uses system events that Oracle Database publishes when cluster servers become unreachable or if network interfaces fail.

Use srvctl to modify ONS ports.

6100 (local)

6200 (remote)

Configured manually

TCP

No

Oracle Real Application Clusters

The port number is assigned automatically during installation. You cannot view or modify it afterward.

Dynamic

9000 to 64999

UDP

Yes

Oracle Services for Microsoft Transaction Server

The port number for Microsoft Transaction Server is configured automatically by Oracle Universal Installer (OUI) 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 OUI uses the same port number for all installations.

In most cases, you do not have to reconfigure the port number.

Dynamic

49152 to 65535

TCP

No

Oracle XML DB - FTP

The Oracle XML DB FTP port is used when applications must access an Oracle database from an FTP listener. The port is configured during installation and you cannot view it afterward.

0

Configured manually

FTP

No

Oracle XML DB - HTTP

The Oracle XML DB HTTP port is used if web-based applications must access an Oracle database from an HTTP listener. The port is configured during installation, and you cannot view it afterward.

0

Configured manually

HTTP

No