Openvms cluster considerations, Individual system versus clusterwide definition – Oracle Audio Technologies ORACLE9I B10508-01 User Manual

Page 169

Advertising
background image

Running the Oracle HTTP Server on OpenVMS

Apache Server Installation/Configuration

D-23

OpenVMS Cluster Considerations

An OpenVMS Cluster is a group of OpenVMS systems that work together as one
virtual system

.

The Oracle HTTP Server runs in an OpenVMS Cluster so you can

take advantage of the resource sharing that increases the availability of services and
data

.

Keep the following points in mind:

The Oracle HTTP Server is supported on OpenVMS Alpha Version 7.1-2 or
higher.

The Oracle HTTP Server runs in an Alpha or a mixed-architecture cluster.

Individual System versus Clusterwide Definition

To define clusterwide versus individual configuration files, APACHE$ROOT uses the
following concealed logical names:

APACHE$COMMON

defines clusterwide files.

APACHE$SPECIFIC

defines system-specific files.

When reading a file, the server first looks for a system-specific version of the file in
APACHE$SPECIFIC:[directory]

.

If it does not find one, then it looks for a

clusterwide file in APACHE$COMMON:[directory].

APACHE$CGI_USE_DCLCOM_FOR_IMAGES

If defined, this system logical name forces CGI images to
execute within a DCL process

.

The default is to execute

CGI images directly

.

(Note: Direct execution of CGI

images in not currently supported.)

APACHE$DL_NO_UPPERCASE_FALLBACK

If defined to be true (1, T, or Y), this system logical name
disables case-insensitive symbol name lookups whenever
case-sensitive lookups fail

.

See

APACHE$DL_FORCE_UPPERCASE.

APACHE$DL_FORCE_UPPERCASE

If defined to be true (1, T, or Y), this system logical name
forces case-sensitive dynamic image activation symbol
lookups

.

By default, symbol lookups are first done in a

case-sensitive manner and then, if failed, a second attempt
is made using case-insensitive symbol lookups

.

This

fallback behavior can be disabled with
APACHE$DL_NO_UPPERCASE_FALLBACK.

Table D–2

Oracle HTTP Server Logical Names and Their Descriptions

Logical Name

Description

Advertising