Entering content frame

 MONITOR_CACHES 

This monitor system table MONITOR_CACHES contains information about operations on the various caches.

Column DESCRIPTION

Value

Explanation

Data cache accesses

Number of accesses to pages in the data cache (number of accesses to data pages and pages with rollback information)

Data cache accesses successful

Number of successful accesses to pages in the data cache

Data cache accesses unsuccessful

Number of unsuccessful accesses to pages in the data cache

Data cache hit rate (%)

Percentage of successful accesses to pages in the data cache

Catalog cache accesses

Number of accesses to the session-specific catalog cache

Catalog cache accesses successful

Number of successful accesses to the session-specific catalog cache

Catalog cache accesses unsuccessful

Number of unsuccessful accesses to the session-specific catalog cache

Catalog cache hit rate (%)

Percentage of successful accesses to the session-specific catalog cache

Sequence cache accesses

Number of accesses to the sequence cache

Sequence cache accesses successful

Number of successful accesses to the sequence cache

Sequence cache accesses unsuccessful

Number of unsuccessful accesses to the sequence cache

Sequence cache hit rate (%)

Percentage of successful accesses to the sequence cache

Data cache sqlpage accesses

Number of accesses to data pages in the data cache

Data cache sqlpage accesses successful

Number of successful accesses to data pages in the data cache

Data cache sqlpage accesses unsuccessful

Number of unsuccessful accesses to data pages in the data cache

Data cache sqlpage hit rate(%)

Percentage of successful accesses to pages in the data cache

Data history/undo accesses

Number of accesses to pages with rollback information in the data cache

Data history/undo accesses successful

Number of successful accesses to pages with rollback information in the data cache

Data history/undo accesses unsuccessful

Number of unsuccessful accesses to pages with rollback information in the data cache

Data history/undo hit rate (%)

Percentage of successful accesses to pages with rollback information in the data cache

If you run the operating system Windows NT/2000 with the Intel memory extension PSE36, the table contains the following additional information:

Column DESCRIPTION

Value

Explanation

PSE36 data cache accesses

Number of accesses to the PSE36 data cache

PSE36 data cache accesses successful

Number of successful accesses to the PSE36 data cache

PSE36 data cache accesses unsuccessful

Number of unsuccessful accesses to the PSE36 data cache

PSE36 data cache hit rate (%)

Percentage of successful accesses to the PSE36 data cache

 

 

Leaving content frame