关于V$RESOURCE_LIMIT官方介绍
2016-04-07 22:46
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关于V$RESOURCE_LIMIT官方介绍
V$RESOURCE_LIMIT
V$RESOURCE_LIMIT
displays information about global resource use for some of the
system resources. Use this view to monitor the consumption of resources so that you
can take corrective action, if necessary. Many of the resources correspond to
initialization parameters listed in .
Some resources, those used by DLM for example, have an initial allocation (soft limit),
and the hard limit, which is theoretically infinite (although in practice it is limited by
SGA size). During SGA reservation/initialization, a place is reserved in SGA for the
INITIAL_ALLOCATION
of resources, but if this allocation is exceeded, additional
resources are allocated up to the value indicated by
LIMIT_VALUE. The
CURRENT_
UTILIZATION column indicates whether the initial allocation has been exceeded. When
the initial allocation value is exceeded, the additional required resources are allocated
from the shared pool, where they must compete for space with other resources.
A good choice for the value of INITIAL_ALLOCATION
will avoid the contention for
space. For most resources, the value for INITIAL_ALLOCATION
is the same as the
LIMIT_
VALUE.
Exceeding LIMIT_VALUE
results in an error.
V$RESOURCE_LIMIT
V$RESOURCE_LIMIT
displays information about global resource use for some of the
system resources. Use this view to monitor the consumption of resources so that you
can take corrective action, if necessary. Many of the resources correspond to
initialization parameters listed in .
Some resources, those used by DLM for example, have an initial allocation (soft limit),
and the hard limit, which is theoretically infinite (although in practice it is limited by
SGA size). During SGA reservation/initialization, a place is reserved in SGA for the
INITIAL_ALLOCATION
of resources, but if this allocation is exceeded, additional
resources are allocated up to the value indicated by
LIMIT_VALUE. The
CURRENT_
UTILIZATION column indicates whether the initial allocation has been exceeded. When
the initial allocation value is exceeded, the additional required resources are allocated
from the shared pool, where they must compete for space with other resources.
A good choice for the value of INITIAL_ALLOCATION
will avoid the contention for
space. For most resources, the value for INITIAL_ALLOCATION
is the same as the
LIMIT_
VALUE.
Exceeding LIMIT_VALUE
results in an error.
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