## MONITOR_CACHES

### Definition

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

### Structure

DESCRIPTION Column

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 data 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 data pages in the data cache
Data history/undo accesses | Number of accesses to pages with rollback information or information for consistent reading in the data cache
Data history/undo accesses successful | Number of successful accesses to pages with rollback information or information for consistent reading in the data cache
Data history/undo accesses unsuccessful | Number of unsuccessful accesses to pages with rollback information or information for consistent reading in the data cache
Data history/undo hit rate (%) | Percentage of successful accesses to pages with rollback information or information for consistent reading in the data cache

The system table MONITOR_CACHES exists only to enable compatibility with older database versions. Instead of the system table MONITOR_CACHES, use the system table CACHESTATISTICS.

See also:

MONITOR