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OPEN_LINKS_PER_INSTANCE(转)

原创 Linux操作系统 作者:tochar 时间:2007-07-27 00:00:00 0 删除 编辑

OPEN_LINKS_PER_INSTANCE

Parameter type

Integer

Default value

4

Parameter class

Static

Range of values

0 to 4294967295 (4 GB -1)

Real Application Clusters

Multiple instances can have different values.

OPEN_LINKS_PER_INSTANCE specifies the maximum number of migratable open connections globally for each database instance. XA transactions use migratable open connections so that the connections are cached after a transaction is committed. Another transaction can use the connection, provided the user who created the connection is the same as the user who owns the transaction.

OPEN_LINKS_PER_INSTANCE is different from OPEN_LINKS, which indicates the number of connections from a session. The OPEN_LINKS parameter is not applicable to XA applications.


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