Wednesday, March 4, 2009

RESOURCE_MANAGER_CPU_ALLOCATION

Property

Description

Parameter type

Integer

Default value

0

Modifiable

ALTER SYSTEM

Range of values

0 to operating system-specific

Basic

No

Note:

1. The RESOURCE_MANAGER_CPU_ALLOCATION parameter is deprecated. It is retained for backward compatibility only.

2. RESOURCE_MANAGER_CPU_ALLOCATION specifies the number of CPUs that the Resource Manager should utilize. The Resource Manager controls how a system's CPUs are utilized by its database's sessions.

The Resource Manager schedules database sessions on the CPUs according to a Resource Plan that has been configured and enabled by the DBA. Normally, the Resource Manager schedules enough database sessions to keep all CPUs utilized. However, in some scenarios, a DBA may only want to schedule enough database sessions to keep a subset of the CPUs utilized.

3. Query for the current value of the parameter

select name, value, isdefault, isses_modifiable, issys_modifiable,

isinstance_modifiable, isdeprecated, description

from v$parameter

where upper(name) = 'RESOURCE_MANAGER_CPU_ALLOCATION';

Oracle initializatoin parameters

RESOURCE_LIMIT

Property

Description

Parameter type

Boolean

Default value

false

Modifiable

ALTER SYSTEM

Range of values

true | false

RESOURCE_LIMIT determines whether resource limits are enforced in database profiles.

Values:

  • TRUE

Enables the enforcement of resource limits

  • FALSE

Disables the enforcement of resource limits

Note:

1. See Oracle Database Administrator's Guide and Oracle Database SQL Language Reference for more information on setting resource limits for profiles.

2. Query for the current value of the parameter

select name, value, isdefault, isses_modifiable, issys_modifiable,

isinstance_modifiable, isdeprecated, description

from v$parameter

where upper(name) = 'RESOURCE_LIMIT';

Oracle initializatoin parameters

REPLICATION_DEPENDENCY_TRACKING

Property

Description

Parameter type

Boolean

Default value

true

Modifiable

No

Range of values

true | false

REPLICATION_DEPENDENCY_TRACKING enables or disables dependency tracking for read/write operations to the database. Dependency tracking is essential for propagating changes in a replicated environment in parallel.

Values:

  • TRUE

Enables dependency tracking.

  • FALSE

Allows read/write operations to the database to run faster, but does not produce dependency information for Oracle to perform parallel propagation. Do not specify this value unless you are sure that your application will not perform any read/write operations to the replicated tables.

Note:

1. See also Oracle Database Advanced Replication for more information on parallel propagation dependency tracking

2. Query for the current value of the parameter

select name, value, isdefault, isses_modifiable, issys_modifiable,

isinstance_modifiable, isdeprecated, description

from v$parameter

where upper(name) = 'REPLICATION_DEPENDENCY_TRACKING';

NAME

VALUE

IS

DEFAULT

ISSES_

MODIFIABLE

ISSYS_

MODIFIABLE

ISINSTANCE_

MODIFIABLE

IS

DEPRECATED

DESCRIPTION

replication_dependency_tracking

TRUE

TRUE

FALSE

FALSE

FALSE

FALSE

tracking dependency for Replication parallel propagation

Oracle initializatoin parameters