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Object documentation IOBUFFERCACHES Locate the document in the library structure

Definition

The system table IOBUFFERCACHES contains information on using the IO buffer cache, which is dimensioned by the database parameter CACHE_SIZE.

Structure

IOBUFFERCACHES

TOTALSIZE

FIXED(20)

Configured size of the I/O buffer cache according to the database parameter CACHE_SIZE (KB)

DATACACHEUSEDSIZE

FIXED(20)

Pages used by the data cache (KB)

CONVERTERUSEDSIZE

FIXED(20)

Pages used by the data cache (KB)

LOGQUEUEUSEDSIZE

FIXED(20)

Pages used by the log queue (KB)

IOMANAGEMENTUSEDSIZE

FIXED(20)

Pages used I/0 Management (KB).

FILEDIRECTORYUSEDSIZE

FIXED(20)

Pages used by the file directory (KB)

RESTARTRECORDUSEDSIZE

FIXED(20)

Restart pages that are used for the snapshots (KB)

BLOCKALLOCATORUSEDSIZE

FIXED(5)

Memory used by the block allocators (KB)

UNUSEDSIZE

FIXED(20)

Unused pages (KB)

 

See also:

MEMORYALLOCATORSTATISTICS

 

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