Oracle 参数 MIN_AUTH_SERVERS 官方解释,作用,如何配置最优化建议

本站中文解释

_CHK

MIN_AUTH_SERVERS_CHK是Oracle数据库中用来检查域服务器的最小数量参数。参数值用于指定客户端连接域服务器时需要多少个不同的域服务器。如果参数设置过小,会影响Oracle的负载均衡能力和安全维护能力。

可以使用sqlplus登录ora中,执行show parameter MIN_AUTH_SERVERS_CHK查看当前设置情况。可以通过执行alter system set MIN_AUTH_SERVERS_CHK=num命令重新设置参数的值,其中num代表所设置的最小域服务器数量,取值范围为:0-65535。一般情况下,建议设置为2,如果域服务器数量不足,那么请设置更大的值。

官方英文解释

MIN_AUTH_SERVERS specifies the minimum number of authentication servers in the authentication pool. This pool authenticates user connections when client applications connect to Database Resident Connection Pooling (DRCP).

Property Description

Parameter type

Integer

Default value

If the ENABLE_PER_PDB_DRCP initialization parameter is set to true, then the default value for MIN_AUTH_SERVERS is 0 in each PDB.

If the ENABLE_PER_PDB_DRCP initialization parameter is set to false, then the default value for MIN_AUTH_SERVERS is 1 in the CDB root.

Modifiable

ALTER SYSTEM

Modifiable in a PDB

Yes, according to the following guidelines:

  • When the ENABLE_PER_PDB_DRCP initialization parameter is set to true, MIN_AUTH_SERVERS can be modified only at the PDB level; it cannot be modified for the CDB root.

  • When the ENABLE_PER_PDB_DRCP initialization parameter is set to false, MIN_AUTH_SERVERS can be modified only for the CDB root; it cannot be modified at the PDB level.

Range of values

Minimum: 0

Maximum: MAX_AUTH_SERVERS or PROCESSES, whichever is the lesser value

Basic

No

Oracle RAC

Different instances can use different values.

The value of this parameter must be less than or equal to the values of both the MAX_AUTH_SERVERS initialization parameter and the PROCESSES initialization parameter. The MAX_AUTH_SERVERS parameter specifies the maximum number of authentication servers in the authentication pool. The PROCESSES parameter specifies the maximum number of operating system user processes that can simultaneously connect to Oracle.

Note:

This parameter is available starting with Oracle Database release 19c, version 19.10.

See Also:

  • Oracle Database
    Administrator’s Guide
    for more information about setting this parameter

  • “ENABLE_PER_PDB_DRCP”

  • “MAX_AUTH_SERVERS”

  • “PROCESSES”


数据运维技术 » Oracle 参数 MIN_AUTH_SERVERS 官方解释,作用,如何配置最优化建议