Background Processes

• Core Server Daemons (ns-slapd)

  There is one daemon running per server instance. This daemon listens to the port that is configured in the server instance (389 by default) and processes the incoming LDAP requests. This daemon reads and writers configuration and user data located in the server instance.

• Common Agent Container (CACAO) Framework Daemon

  This daemon allows Directory Service Control Center to start up server instances that exist on remote hosts. The daemon listens on port 11162, by default, and hosts the Directory Service Control Center Agent plug-in.

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  Note –

  The CACAO service can only be managed by using the CACAO administrative command-line interface (cacaoadm). Managing the CACAO service by using the Services Manager on Windows systems is not supported and can have undesirable results.

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• Application Server Daemon

  The application server daemon listens to HTTP on port 8080, by default. The daemon hosts Directory Service Control Center web application and present only on the host where Directory Service Control Center is deployed.

• Directory Service Control Center Registry Daemon

  This is a directory server instance for Directory Service Control Center's own use. The daemon listens to LDAP port 3998, by default. The daemon responds to requests from Directory Service Control Center and present only on the host where Directory Service Control Center is deployed.

Generally, all the elements listed above are rarely present on the same machine. A typical deployment would be laid out as follows:

• One machine (the administration host) is dedicated to Directory Service Control Center. On this machine, only the Application Server daemon and the Directory Service Control Center registry daemon are running.

• One or more machines are dedicated to server instances. Each machine hosts a single server instance. Only one core server daemon and the common agent container framework daemons are running.

The following figure shows a typical sample deployment.

Figure 1–1 Administration Host and Server Host on Different Systems

For more information, see Directory Server Enterprise Edition Administration Model in Oracle Fusion Middleware Deployment Planning Guide for Oracle Directory Server Enterprise Edition.