Table 4 Module scripts of the HP Serviceguard toolkit for Oracle Data Guard

File Name

Description

Available in Directory

Toolkit Module Script

This script is called by the Master

/etc/cmcluster/scripts/tkit/

(tkit_module.sh)

Control Script and acts as an interface

dataguard

 

between the Master Control Script and

 

 

the toolkit interface script

 

 

(hadg.sh/hadg_rac.sh). It is also

 

 

responsible for calling the toolkit

 

 

Configuration File Generator Script

 

 

(described below).

 

Toolkit Configuration File

This script is called by the Module

 

Generator Script

Script when the package configuration

 

(tkit_gen.sh)

is applied using cmapplyconf to

 

 

generate the user configuration file

 

 

(hadg.conf) in the package directory

 

 

(TKIT_DIR).

 

External_pre Module Script

This script is called by the Master

 

(cc_ext.sh)

Control Script and acts as an interface

 

 

between the Master Control Script and

 

 

the External_pre interface script

 

 

(hadg_rac_cc.sh). This external script

 

 

is used in Continentalclusters

 

 

environment.

 

The following parameters must be provided in the Package Configuration File Table 5 Package attributes

Variable Name

Description

ACTIVE_STANDBY

This parameter determines whether Active Data Guard

 

must be enabled on a Physical standby database instance

 

or not. The Active Data Guard Option available with

 

Oracle Database 11g Enterprise Edition enables the

 

physical standby database to be opened for read-only

 

access. To enable this feature, you can set the toolkit to

 

[yes] in a package for Physical Standby database. The

 

default value is [no].

 

NOTE: To enable Active Data Guard, the user needs an

 

optional license from Oracle. Therefore, you must not set

 

the toolkit parameter to [yes] without a license.

MONITOR_DG_BROKER

The ODG Broker is a distributed management framework

 

that automates the creation, maintenance, and monitoring

 

of Data Guard configurations. The parameter

 

MONITOR_DG_BROKER specifies whether the ODG broker

 

can be used or not. It can take values [yes] or [no]. The

 

default value is [no]. This parameter can be used in RAC

 

environment only. Data Guard Broker is not supported in

 

the toolkit in Single Instance database environment.

 

NOTE: If broker configuration is enabled when this

 

parameter is set to [no], the toolkit fails the package startup

 

to avoid issues. Therefore, this must be avoided.

REAL_TIME_APPLY

This is an ODG feature that enables log apply services to

 

apply redo data as it is received, without waiting for the

 

current standby redo log file to be archived. This results in

 

faster switch over and failover times. To enable this feature

 

with the toolkit set the toolkit parameter

 

REAL_TIME_APPLY to [yes] in the package configuration

 

file. The default value is [no].

22 Serviceguard toolkit for Oracle Data Guard

Page 22
Image 22
HP Serviceguard Toolkits for Database Replication Solutions manual Activestandby