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Oracle® Database Reference
10g Release 1 (10.1)

Part Number B10755-01
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Property Description
Parameter type Big integer
Syntax DB_CACHE_SIZE = integer [K | M | G]
Default value If SGA_TARGET is set: If the parameter is not specified, then the default is 0 (internally determined by the Oracle Database). If the parameter is specified, then the user-specified value indicates a minimum value for the memory pool.

If SGA_TARGET is not set: 48 MB, rounded up to the nearest granule size

Basic No

DB_CACHE_SIZE specifies the size of the DEFAULT buffer pool for buffers with the primary block size (the block size defined by the DB_BLOCK_SIZE initialization parameter).

The value must be at least the size of one granule (smaller values are automatically rounded up to the granule size). A value of zero is illegal because zero is the size of the DEFAULT pool for the standard block size, which is the block size for the SYSTEM tablespace.

See Also:

Oracle Database Performance Tuning Guide and Oracle Database Administrator's Guide for more information on setting this parameter