- An asterisk * in the Notes field indicates that the ports are IANA registered.
| Service | TCP | UDP | Notes |
|---|---|---|---|
| sql*net | 66 | 66 | * Oracle SQL*NET. I think this is legacy. I haven't seen it used. |
| SQL*Net 2 | 1521 | 1521 | Probably the most common Oracle port. Not registered to Oracle, IANA registered for ncube-lm, nCube License Manager. |
| SQL*Net 1 | 1525 | 1525 | * Registered as orasrv. No longer used? |
| listener port | 1526 | 1526 | 1526 is also a popular Oracle listener port, but it is also not IANA registered. In the IANA list, it is pdap-np, Prospero Data Access Prot non-priv. |
| tlisrv | 1527 | 1527 | * |
| coauthor | 1529 | 1529 | * |
| Oracle Remote Data Base | 1571 | 1571 | * rdb-dbs-disp |
| oraclenames | 1575 | 1575 | * Default and officially registered listening port for client connections to an Oracle Names server using TCP/IP or TCP/IP with SSL. Deprecated in 9i and above, you're supposed to use LDAP instead. |
| Oracle Net8 Cman | 1630 | 1630 | * oraclenet8cman. Default and officially registered listening port for client connections to Oracle Connection Manager |
| oracle-em1 | 1748 | 1748 | * |
| oracle-em2 | 1754 | 1754 | * |
| Oracle-VP2 | 1808 | 1808 | * |
| Oracle-VP1 | 1809 | 1809 | * |
| Oracle Net8 CMan Admin | 1830 | 1830 | * net8-cman. Default and officially registered listening port for administrative commands to Oracle Connection Manager |
| oracle? | 2005 | * registered as "berknet" for 2005 TCP, oracle for 2005 UDP | |
| Oracle GIOP | 2481 | 2481 | * giop |
| Oracle GIOP SSL | 2482 | 2482 | * giop-ssl |
| Oracle TTC | 2483 | 2483 | * ttc. Oracle may use this port to replace 1521 in future. |
| Oracle TTC SSL | 2484 | 2484 | * ttc-ssl. |
| OEM Agent | 3872 | 3872 | * oem-agent |
| Oracle RTC-PM port | 3891 | 3891 | * rtc-pm-port |
| Oracle dbControl Agent | 3938 | 3938 | * dbcontrol_agent |
Although incomplete, this is a pretty good article on the mess that is Oracle ports: Connecting with Oracle: Oracle Ports.
I also got some information from these copies of Oracle documentation Oracle9i Net Services Reference Guide Release 2 (9.2) and Oracle Database Net Services Reference Guide 10g Release 1 (10.1)
The Oracle Technology Network (OTN) should provide all the information you need, but I find it difficult to locate things there.
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