Oracle 5.0 Reference Manual page 480

This value controls the demotion of buffers from the hot sublist of a key cache to the warm sublist.
Lower values cause demotion to happen more quickly. The minimum value is 100. The default value
is 300. See Section 8.6.1, "The
•
key_cache_block_size
Command-Line Format
Option-File Format
Option Sets Variable
Variable Name
Variable Scope
Dynamic Variable
The size in bytes of blocks in the key cache. The default value is 1024. See
Key Cache".
MyISAM
•
key_cache_division_limit
Command-Line Format
Option-File Format
Option Sets Variable
Variable Name
Variable Scope
Dynamic Variable
The division point between the hot and warm sublists of the key cache buffer list. The value is the
percentage of the buffer list to use for the warm sublist. Permissible values range from 1 to 100. The
default value is 100. See
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language
Server System Variables
Type
numeric
Default
300
Range
100 .. 4294967295
Permitted Values
Platform
64
Bit Size
Type
numeric
Default
300
Range
100 .. 18446744073709547520
Key Cache".
MyISAM
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--key_cache_block_size=#
key_cache_block_size
Yes,
key_cache_block_size
key_cache_block_size
Global
Yes
Permitted Values
Type
numeric
Default
1024
Range
512 .. 16384
[460]
--key_cache_division_limit=#
key_cache_division_limit
Yes,
key_cache_division_limit
key_cache_division_limit
Global
Yes
Permitted Values
Type
numeric
Default
100
Range
1 .. 100
Section 8.6.1, "The
MyISAM
460
[460]
Section 8.6.1, "The
[460]
Key Cache".