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Oracle® HTTP Server Administrator's Guide
10g Release 1 (10.1)

Part Number B12255-01
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1
Oracle HTTP Server Overview

This chapter describes the Oracle HTTP Server, highlighting the differences between the Oracle distribution and the open source Apache product on which it is based. It also explains how to start, stop and restart the server.

Topics discussed are:

Documentation from the Apache Software Foundation is referenced when applicable.


Note:

Readers using this guide in PDF or hard copy formats will be unable to access third-party documentation, which Oracle provides in HTML format only. To access the third-party documentation referenced in this guide, use the HTML version of this guide and click the hyperlinks.


Oracle HTTP Server Features

Oracle HTTP Server is the Web server component of Oracle Database. It is based on the Apache HTTP Server, version 1.3.28. It is a robust, reliable Web server, preconfigured to do the following:

Oracle HTTP Server Components

Oracle HTTP Server consists of several components that run within the same process. These components provide the extensive list of features that Oracle HTTP Server offers when handling client requests. Following are the major components:

Oracle HTTP Server Modules

Table 1-1 identifies the modules shipped with Oracle HTTP Server. Modules extend the basic functionality of the Web server, and support integration between Oracle HTTP Server and other Oracle Database components. Note that the list differs from the Apache open source distribution (given the inclusion of Oracle modules), and that not all modules are supported by Oracle.

Table 1-1 Oracle HTTP Server Modules  
Module

Oracle Support

Notes

mod_access

Yes

 

mod_actions

Yes

 

mod_alias

Yes

 

mod_asis

No

 

mod_auth

Yes

 

mod_auth_anon

Yes

 

mod_auth_db

No

Disabled. Not shipped by Oracle.

mod_auth_dbm

No

 

mod_auth_digest

No

Disabled. Experimental MD5 authentication; not shipped by Oracle.

mod_autoindex

Yes

 

mod_cern_meta

No

 

mod_certheaders

Yes

 

mod_cgi

Yes

 

mod_define

Yes

UNIX systems only.

mod_digest

Yes

 

mod_dir

Yes

 

mod_dms

Yes

Oracle module.

mod_env

Yes

 

mod_example

No

 

mod_expires

Yes

 

mod_fastcgi

Yes

 

mod_headers

Yes

 

mod_imap

No

 

mod_include

Yes

 

mod_info

Yes

 

mod_isapi

No

Windows systems only. Not shipped by Oracle

mod_log_agent

No

Deprecated.

mod_log_config

Yes

 

mod_log_referer

Yes

Deprecated.

mod_mime

Yes

 

mod_mime_magic

Yes

 

mod_mmap_static

No

 

mod_negotiation

Yes

 

mod_onsint

Yes

Oracle module.

mod_ossl

Yes

Oracle module.

mod_perl

Yes

 

mod_plsql

Yes

Oracle module.

mod_proxy

Yes

 

mod_rewrite

Yes

 

mod_setenvif

Yes

 

mod_so

Yes

 

mod_speling

Yes

 

mod_status

Yes

 

mod_unique_id

Yes

 

mod_userdir

Yes

 

mod_usertrack

Yes

 

mod_vhost_alias

Yes

 

Oracle HTTP Server Support

Oracle provides technical support for the following Oracle HTTP Server features and conditions:

Oracle HTTP Server Management

You can manage Oracle HTTP Server using opmnctl. It is the command-line utility for Oracle Process Manager and Notification Server (OPMN) for process management. It is located in

Starting, Stopping, and Restarting Oracle HTTP Server

Oracle HTTP Server is managed by Oracle Process Manager and Notification Server (OPMN). You must always use the opmnctl utility to start, stop and restart Oracle HTTP Server. Otherwise, the configuration management infrastructure cannot detect or communicate with the Oracle HTTP Server processes, and problems may occur.


Note:

Do not use the apachectl utility to manage the Oracle HTTP Server.


To determine the state of Oracle HTTP Server, use the following command:

opmnctl status

The processes are listed with their current state such as "Up" or "Down".

Starting Oracle HTTP Server

To start Oracle HTTP Server, use the startproc command:

Stopping Oracle HTTP Server

To stop Oracle HTTP Server, use the stopproc command:

Restarting Oracle HTTP Server

Restarting Oracle HTTP Server performs a graceful restart, which is invisible to clients. In a graceful restart, on UNIX, a USR1 signal is sent. When the process receives this signal, it tells the children to exit after processing the current request. (Children that are not servicing requests exit immediately.)

The parent re-reads the configuration files and re-opens the log files, replacing the children with new children in accordance with the settings it finds when re-reading the configuration files. It always observes the process creation settings (MaxClients, MaxSpareServers, MinSpareServers) specified, and takes the current server load into account.

To restart Oracle HTTP Server, use the restartproc command: