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 |