Oracle® HTTP Server Administrator's Guide 10g Release 1 (10.1) Part Number B12255-01 |
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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.
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 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:
See Also:
"Oracle HTTP Server Modules" for a complete list of modules shipped with Oracle HTTP Server. |
mod_perl
.
See Also:
Oracle Application Server 10g Concepts for more information regarding Oracle Database components, and how they relate to each other. |
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.
Oracle provides technical support for the following Oracle HTTP Server features and conditions:
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
ORACLE_HOME
/opmn/bin
ORACLE_HOME
\opmn\bin
See Also:
Oracle Process Manager and Notification Server Administrator's Guide for more information on |
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.
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".
To start Oracle HTTP Server, use the startproc
command:
ORACLE_HOME
/opmn/bin> opmnctl
[verbose]
startproc ias-component=HTTP_Server
ORACLE_HOME
\opmn\bin> opmnctl
[verbose]
startproc ias-component=HTTP_Server
To stop Oracle HTTP Server, use the stopproc
command:
ORACLE_HOME
/opmn/bin> opmnctl
[verbose]
stopproc ias-component=HTTP_Server
ORACLE_HOME
\opmn\bin> opmnctl
[verbose]
stopproc ias-component=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:
ORACLE_HOME
/opmn/bin> opmnctl
[verbose]
restartproc ias-component=HTTP_Server
ORACLE_HOME
\opmn\bin> opmnctl
[verbose]
restartproc ias-component=HTTP_Server
See Also:
Oracle Process Manager and Notification Server Administrator's Guide for more information on |