10 Configuring and Administering Oracle Connection Manager

Oracle Connection Manager is a proxy server that forwards connection requests to databases or other proxy servers. It operates at the session level, and usually resides on a computer separate from the database server and client computers.

Oracle Connection Manager is available for installation with Oracle Database Enterprise Edition. It is a custom installation option on the client system. Starting with Oracle Database Client 23ai, Oracle Connection Manager is available as an image file for installation and configuration. Refer to your platform-specific Oracle Database installation guide for additional information.

• Setting Up Oracle Connection Manager
  In order to set up Oracle Connection Manager, you must configure the proxy server, database, and clients.
• Configuring Oracle Connection Manager in Traffic Director Mode
  A current Oracle Database Client Interface (OCI) client or a supported older version OCI client (Oracle Database 11g Release 2 (11.2) and later) can connect to Oracle Connection Manager in Traffic Director Mode.
• Configuring Oracle Connection Manager in Tunneling Mode for Reverse Connection
  Oracle Connection Manager in tunnelling mode establishes tunnel connections between server CMAN and client CMAN. Clients can make reverse connections over tunnels by connecting to server cman.
• Using Oracle Connection Manager as a Bridge for IPv4 and IPv6
  In some database connection environments, a client and database may use different versions of the IP protocol so that complete connectivity does not exist. In this case, at least two hops in the connection use different versions of the IP protocol.
• Using Oracle Connection Manager to Prevent Denial-of-Service Attacks
  You can enforce a limit on the number of client connections that Oracle Connection Manager (CMAN) can handle from an IP address in a specific time interval.
• Starting and Stopping Oracle Connection Manager
  After configuring Oracle Connection Manager, you can start and administer it using the Oracle Connection Manager Control (CMCTL) utility.
• About CMCTL REST Interface
  CMCTL REST interface helps you manage Oracle Connection Manager (Oracle CMAN) instance from remote machines using REST interface. A client that supports HTTPS can issue CMCTL equivalent commands. Each REST API call must have WWW-Authenticate HTTPS header with Basic authentication method.
• Migrating CMAN Sessions During Patching
  You can migrate the established client/server sessions from one Oracle Connection Manager (CMAN) instance to another Oracle CMAN instance during a planned upgrade or patching of Oracle CMAN with zero downtime.
• Oracle Connection Manager Enhancements
  Oracle Connection Manager proxies and screens request for Oracle Database Server.