Monday, November 3, 2008

MAX_SHARED_SERVERS

Property

Description

Parameter type

Integer

Default value

There is no default value.

Modifiable

ALTER SYSTEM

Range of values

If MAX_SHARED_SERVERS is specified, then it should be greater than or equal to SHARED_SERVERS and less than PROCESSES.

Basic

No

MAX_SHARED_SERVERS specifies the maximum number of shared server processes allowed to be running simultaneously. Setting this parameter enables you to reserve process slots for other processes, such as dedicated servers.

When you want to reduce the range of shared servers, you can reduce MAX_SHARED_SERVERS before reducing SHARED_SERVERS. If MAX_SHARED_SERVERS is lower than SHARED_SERVERS, then the number of shared servers will not vary but will remain at the constant level specified by SHARED_SERVERS. If MAX_SHARED_SERVERS is not specified, then a shared server process may be spawned as long as the number of free process slots is greater than 1 / 8 the maximum number of processes, or 2 if PROCESSES is less than 24.

Note:

1. This parameter was introduced in Oracle9i. It replaces the MTS_MAX_SERVERS parameter in Oracle8i and earlier.

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) = ‘MAX_SHARED_SERVERS’;

NAME

VALUE

IS

DEFAULT

ISSES_

MODIFIABLE

ISSYS_

MODIFIABLE

ISINSTANCE_

MODIFIABLE

IS

DEPRECATED

DESCRIPTION

max_shared_servers

TRUE

FALSE

IMMEDIATE

TRUE

FALSE

max number of shared servers

Oracle initializatoin parameters

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