1select @@global.aria_pagecache_file_hash_size;
2@@global.aria_pagecache_file_hash_size
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4select @@session.aria_pagecache_file_hash_size;
5ERROR HY000: Variable 'aria_pagecache_file_hash_size' is a GLOBAL variable
6show global variables like 'aria_pagecache_file_hash_size';
7Variable_name	Value
8aria_pagecache_file_hash_size	512
9show session variables like 'aria_pagecache_file_hash_size';
10Variable_name	Value
11aria_pagecache_file_hash_size	512
12select * from information_schema.global_variables where variable_name='aria_pagecache_file_hash_size';
13VARIABLE_NAME	VARIABLE_VALUE
14ARIA_PAGECACHE_FILE_HASH_SIZE	512
15select * from information_schema.session_variables where variable_name='aria_pagecache_file_hash_size';
16VARIABLE_NAME	VARIABLE_VALUE
17ARIA_PAGECACHE_FILE_HASH_SIZE	512
18set global aria_pagecache_file_hash_size=200;
19ERROR HY000: Variable 'aria_pagecache_file_hash_size' is a read only variable
20set session aria_pagecache_file_hash_size=200;
21ERROR HY000: Variable 'aria_pagecache_file_hash_size' is a read only variable
22